UNIVERSITY OF ILLINOIS LIBR/RY AT URSANA-CHAMPAIQN Digtttzed by the internet Archive in 2011 with funding from University of Illinois Urbana-Champaign http://www.archive.org/details/insectpestmanage1985univ ^M ./re-, v^/iv' ^as^ re I/, UNIVERSITY OF lUlNfflS AGRICULTURE LIBRARY CIRCULATING COPY AGRICULTURE LIBRARY 1 985 Insect Pest Management Guide LIVESTOCK and LIVESTOCK BUILDINGS Successful pest management is an essential part of effi- cient and profitable livestock production. Although pest- related losses are often inconspicuous, flies, lice, mites, and ticks can cause significant reductions in meat, milk, wool, and egg production. Several livestock pests also transmit important diseases. Eff^ective management of livestock pests should in- clude the use of cultural, mechanical, and biological control tactics as well as the application of chemical insecticides. Insecticides should be viewed as supple- ments to, not replacements for, sanitation and sound cultural practices. Used properly, insecticides efficiently reduce pest populations without injuring livestock or threatening the safety of the pesticide applicator or the ultimate consumer of animal products. This publication is revised annually; always use the current year's issue. Registration changes that occur between revisions will be announced to appropriate media sources and county extension offices. If you have questions about the use of insecticides for livestock insect management, consult your county extension adviser. Selection of the insecticides listed on the following pages was based on EPA registrations and on efficacy data reported by entomologists of the University of Illinois College of Agriculture, the Illinois Natural His- tory Survey, and other midwestern universities. If listed insecticides fail to provide pest control, please contact your county extension adviser or the Entomology Ex- tension office at the University of Illinois. Additional sources of information. In the tables, leaflets outlining the life history, biology, and habits of livestock pests are indicated by the letters "NHE" and the leaflet number. Request these leaflets at your county extension office or from Entomology Extension, 172 Natural Resources Building, 607 East Peabody Drive, Champaign, Illinois 6 1 820. Additional pest management publications available from the Office of Agricultural Publications (47 Mumford Hall, 1301 West Gregory Drive, Urbana, Illinois 61801) include Circular 899, 1985 Insect Pest Management Guide: Field and Forage Crops; Circular 900, 1985 Insect Pest Management Guide: Home, Yard, and Garden; Circular 925, Insect Pests of Cattle; Circular 897, 1985 Insect Pest Management Guide: Com- mercial Vegetable Crops and Greenhouse Vegetables; and Circular 1 136, Alfalfa Weevil Pest Management Program. Using livestock insecticides. The pesticide user is always responsible for the results of insecticide appli- cations to his livestock and crops, as well as for problems of pesticide drift and contamination. All users should observe the following rules. • Read the label and follow directions and safety pre- cautions. THE LABEL IS THE LAW. • Be sure that the insecticide is specifically labeled for the pest and animal in question and the application method planned. • Use face masks or respirators and protective clothing during spraying. Avoid breathing spray mist or dust. • If pesticides are spilled on the skin or clothing, wash thoroughly with soap and water and change clothes. • Do not eat, drink, or smoke when handling pesticides. • Provide adequate ventilation when applying pesticides. • Apply correct dosages and formulations. • Obey the preslaughter interval listed on the label. • Do not exceed registered rates of application. Im- proper or excessive applications can endanger livestock and result in illegal residues in meat and milk. • Avoid drift to adjacent cropland, yards, woodlots, lakes, or ponds. Some materials may injure or kill fish, wildlife, and crops. • Do not treat animals that are sick, overheated, or stressed from shipping, dehorning, castration, recent weaning, and other causes. • Avoid contamination of feed, mangers, water, milk, and milking equipment. • Do not spread treated manure on crops that are not listed on the pesticide label. • Accurately record all pesticide usage. Include the pesticide's trade name, formulation, dilution, applica- tion rate, and date of treatment. UNIVERSITY OF ILLINOIS AT URBANA-CHAMPAIGN COLLEGE OF AGRICULTURE COOPERATIVE EXTENSION SERVICE In cooperation with ILLINOIS NATURAL HISTORY SURVEY CIRCULAR 898 (revised annually) October 1984 Prepared by Richard A. Weinzieri, Extension Entomologist • Store pesticides in their original, labeled containers, safely locked away from children, pets, and livestock. • Dispose of empty pesticide containers promptly and properly according to specified recommendations. Do not breathe smoke from burning containers. • Contact a physician at once in all cases of suspected poisoning. Symptoms of organophosphate poisoning include blurred vision, abdominal cramps, and tight- ness in the chest. Poison Resource Centers. The Poison Resource Centers listed below have been established to provide information about the treatment of poisoning cases. Anyone with a poisoning emergency can call the toll- free telephone number for help. Personnel at the Re- source Center will provide first-aid information and refer callers to local treatment centers if necessary. Poison Resource Centers supplement, but do not replace, local emergency medical services. Do not delay calling local emergency medical personnel to request immediate assistance or transportation. If possible, have the pesticide container and label present when you call or reach a treatment center or hospital. Chicago and northeast Illinois 1753 West Congress Parkway Chicago, Illinois 60612 Telephone: 800-942-5969 Northern and central Illinois 530 N.E. Glen Oak Peoria, Illinois 61603 Telephone: 800-322-5330 Central and southern Illinois 800 East Carpenter Springfield, Illinois 62702 Telephone: 800-252-2022 Preventing livestock poisoning. Every year livestock animals die after consuming pesticide granules, wettable powders, or dusts that have been spilled on trucks, wagons, or soil surfaces. Animals consume the pesticide alone or with feed grains or forage placed on the contaminated surface. Prevent livestock poisoning by properly containing and disposing of spilled pesticides and by storing all pesticides in locked facilities that are inaccessible to domestic and wild animals, as well as to children. NOTE: The information in the following tables is for educational purposes only. Reference to commer- cial products or trade names does not constitute an endorsement by the University of Illinois and does not imply discrimination against similar products. Trade names are presented for reasons of clarity only. The reader is urged to exercise the usual caution in making purchases or evaluating product information. Beef Cattle and Nonlactating Dairy Cattle Pest Treatment method Insecticide and formulation Dilution and rate Preslaughter interval, restrictions, comments LICE (NHE 18) V\e to '/s inch long. Biting lice are red- dish, flattened, and active. Sucking lice are gray to blue and sluggish. Heavy populations cause poor growth, general unthrifti- ness, and anemia. Symptoms are rough, patchy hair coats and a dirty appearance. Lice are most trouble- some when cattle are crowded in shelters during winter months. Self-treatment devices such as back rubbers, face rubbers, and dust bags effectively control lice when used in conjunction with systemic insecticides applied from August through October for grub control. The systemics kill lice that are present on animals during the fall; the self-treating devices then hold louse populations below economic levels throughout the winter. Place rubbing devices and dust bags wher* cattle will use them. For back rubbers and face rubbers, mix insecticides with No. 2 fuel oil, No. 2 diesel fuel. <^' an oil recommended on the insecticide label. Mineral oil is less irritating than fuel oil. Do not use waste oil or motor oil. Keep dust bags dry. Service self-treating devices at least once per month. Back rubber or face rubber (oilers) Dust bag Co-Ral 11.6% EC (coumaphos) malathion 57% EC 1 gal/ 13 gal fuel or mineral oil. 0.5 pt/1.5 gal fuel or mineral oil. 0 days. Do not apply with oral drenches, with other internal medications such as phenothi- azine, or with natural or synthetic pyrethroids, synergists, or organophosphates. 0 days. Products listed for use in dust bags can also be applied by hand-dusting. Follow label directions. Co-Ral 1% D 10 lb dust/bag. Use 0 days. (coumaphos) Rabon 3% D (stirofos) 1 bag/ 10-20 head. 4-8 lb dust/bag. Use 1 bag/ 10-20 head. 0 days. /\c^x Beef Cattle and Nonlactating Dairy Cattle, continued Pest Treatment method Insecticide and formulation Dilution and rate Preslaughter interval, restrictions, comments LICE, tijiii. Spray Pour-on or spot-on Injection Appl\ sufficient spray to thoroughly wet each animal. Use up to 1 gallon finished spray per animal. Do not contaminate feed or water Ciovap 12.57c EC (crotoxyphos plus dichlorvos) Co-Ral 11.6% EC or 25% WP (coumaphos) 2 gal/ 100 gal water. 2 qt 1 1 .6% EC or 2 lb 25% WP/100 gal water. Ectiban 5.7% EC (permethrin) malathion 57% EC Rabon 50% WP or 24% EC (stirofos) Ravap 28.7% EC (stirofos plus dichlorvos) 1 qt/100 gal water. 1 gal/ 100 gal water. 4 lb 50% WP/75 gal water or 1 .5 gal 24% EC/ 100 gal water. 1 gal/75 gal water. 0 days. Make a second application 10-14 days after first. Repeat as necessary but not more often than every 7 days. Do not treat Brahman cattle. 0 days. Do not treat calves less than 3 months old or sick, convalescent, or stressed cattle. Do not spray within 10 days after shipping, weaning, or disease exposure. Do not spray in nonventilated areas. Do not apply in conjunc- tion with other organophosphates, pyreth- roids, synergists, or phenothiazine. 0 days. Repeat treatment 14-21 days after first application. Do not treat more often than every 14 days. 0 days. Do not apply to lactating dairy cattle or within 14 days of freshening. Do not treat calves less than 1 month old. 0 days. Beef cattle only. 0 days. Beef cattle only. Do not treat more often than once every 10 days. Fall applications of systemic pour-ons and spot-ons such as Co-Ral (coumaphos), Warbex (famphur), Tiguvon (fenthion), Neguvon (trichlorfon), and Prolate (phosmet) for grub control also reduce louse populations. These treatments may not provide season-long louse control through the winter. Follow label directions concerning reuse after grub treatment cut-off dates. Products listed below do not provide grub control and pose no problems when used after the grub treatment cut-off date. Dursban 44 (chlorpyrifos) 2 cc/100 lb body weight. LysofF 7.6% EC (fenthion) 1 pt/1 gal water. Use 1 f\ oz/IOO lb body weight. 14 days. Beef cattle only. Apply as spot treat- ment. Do not exceed 16 cc/animal. Do not treat calves under 3 months old or bulls over 8 months old. Do not treat purebred conti- nental or exotic breed cattle such as Charolais, Chianina, Simmental, and Gelbveih. Do not retreat within 30 days. Do not use on cows within 21 days prior to calving or 14 days after calving. 21 days; 35 days if 2 applications are made. Do not apply within 28 days of freshening of dairy cattle. Pour evenly along back line. Do not treat calves under 3 months old or sick, convalescent, or stressed livestock. Do not use with other cholinesterase-inhibiting insecti- cides or drugs. Ivomec 1% (ivermectin) Ready to use. 1 cc/110 lb body weight. 35 days. Inject subcutaneously. Use aseptic procedures. Do not use on dairy cattle of breeding age. Beef Cattle and Noniactating Dairy Cattle, continued Pest Treatment method Insecticide and formulation Dilution and rate Preslaughter interval, restrictions, comments CATTLE GRUBS Larvae ("grubs") bore through the skin and migrate within the host to the skin of the back. Grubs ruin hides and reduce weight gain. The hairy, yellow and black adult flies, slightly smaller than honey bees, annoy grazing cat- tle. Timing of grub control treatments is important. Systemic insecticides applied as pour-ons, spot-ons, or sprays travel within the animal's bloodstream and should be applied to control grubs 6 to 8 weeks before they migrate to the animal's back. Late treatments may cause host-parasite reactions with symptoms of bloat, hindquarter paralysis, or death. Systemic insecticides should be used on native beef cattle herds in August or September in southern Illinois, and in September or October in the northern half of the state. Treat only pastured cattle in herds with histories of grub problems. Animals in confinement are not attacked by ox warble flies (heel flies). Heel fly season and grub treatment dates are earlier for cattle grazed in southern states. Cattle feeders should either know the origin of feeder cattle to determine grub treatment dates or should purchase only cattle that have received grub treatments. Do not apply systemic insecticides in conjunction with or immediately after phenothiazine, with natural or synthetic pyrethroids or their synergists, or with other organophosphate insecticides. Do not treat cattle under stress from castration, dehorning, weaning, shipping, illness, or overexertion. Do not treat calves less than 3 months old. Pour-on Spot-on Spray Injection Apply pour-ons using a long-handled dipper supplied by the manufacturer Apply to the back line from the shoulder to the hip. Co-Ral 4% (coumaphos) Neguvon 8% (trichlorfon) Prolate (GX-118) 11.6% E (phosmet) Tiguvon 3% (fenthion) Warbex 13.2% (famphur) Ready to use. Apply 0.5 fl oz/IOO lb body weight. Ready to use. Apply 0.5 fl oz/100 lb body weight. Do not exceed 4 fl oz/animal. 1 gal/2 gal water. Apply 1 fl oz/100 lb body weight. Do not exceed 8 fl oz/animal. Ready to use. Apply 0.5 fl oz/100 lb body weight. Ready to use. Apply 0.5 fl oz/100 lb body weight. Do not exceed 4 fl oz/animal. 0 days. Do not apply within 14 days of fresh- ening of dairy cattle. 21 days. Do not apply within 7 days of fresh- ening of dairy cattle. 21 days. Do not apply to dairy animals. 35 days. Do not apply within 28 days of freshening of dairy cattle. 35 days. Do not apply within 21 days of freshening of dairy cattle. Do not use on Brahmans or Brahman crossbreeds. To apply spot-ons, use the applicator system provided by the manufacturer. Apply the material to a single location on the back midline. Spotton 20% (fenthion) Ready to use. Apply 4 cc/300 lb body weight. Do not exceed 20 cc/animal. 45 days. Do not treat dairy cattle of breeding age. Use high-pressure sprays (250-350 psi) to apply 3 to 4 quarts of finished spray per animal. Because few farm sprayers generate sufficient pressure for proper application, veterinarians and commercial applicators with appropriate livestock spray equipment should be contacted to apply grub sprays. Use a pencil stream of spray directed at right angles to the sides and back. Treat 10 or fewer animals at one time. Do not contaminate feed or water. Co-Ral 25% WP or 11.6% EC (coumaphos) Prolate (GX-118) 11.6% EC (phosmet) 12-16 lb 25% WP or 8-12 qt 11.6% EC/ 100 gal water. 2 gal/ 100 gal water. 0 days. Do not apply within 14 days of fresh- ening of dairy cattle. 21 days. Beef cattle only. Ivomec 1% (ivermectin) Ready to use. 1 cc/110 lb body weight. 35 days. Inject subcutaneously. Use aseptic procedures. Do not use on dairy cattle of breeding age. Beef Cattle and Nonlactating Dairy Cattle, continued Pest Treatment method Insecticide and formulation Dilution and rate Preslaughter interval, restrictions, comments MANGE MITES Microscopic mites live on the skin or burrow into it. Le- sions vary vvith mite species. Infes- tations are greatest when cattle are crowded in shel- ters during winter months. Choriopiic mange is the most prevalent mite-induced disorder of Illinois cattle. Infested cattle may or may not develop lesions; lesions usually occur as localized nodules that exude serum. They are most numerous from the tailhead to the hind heels. Insecticides listed previously for louse control on beef cattle also control chorioptic mange mites. Cattle scabies (psoroptic mange) is a quarantinable disease. Its symptoms are lesions that occur first on the withers, over the back, and at the tailhead. Small wounds cause itching, and rubbing leads to absesses, especially on the shoulders and rump. Mites move to edges of scabs, causing lesions to enlarge and coalesce. Scabs may cover much of the body. Where cattle scabies is detected, contact the Illinois Department of Agriculture, Bureau of Animal Health, Illinois State Fairgrounds, Springfield. Illinois 62706, 217/782-4944. TICKS 8-legged adults of most species are reddish brown and less than '/< inch long. Engorged fe- males may exceed '/j inch in length. Ticks are blood feeders and disease vectors. Ticks rarely pose an economic threat to cattle in Illinois. Problems are most likely where cattle graze in brushy or wooded areas. Spray Apply sufficient spray to thoroughly wet each animal; use up to 1 gallon finished spray per animal. Do not contaminate feed or water. Ciovap 12.57c EC (crotoxyphos plus dichlorvos) Co-Ral 25% WP or 11.6% EC (coumaphos) 2 gal/ 100 gal water. 4 lb 25% WP or 1 gal 11.6% EC/ 100 gal water. Ectiban 5.7% EC (permethrin) malathion 57% EC 1 qt/100 gal water. 1-2 gal/ 100 gal water. 0 days. Repeat application 10-14 days after first spray. Do not use more than once every 7 days. 0 days. Do not treat calves less than 3 months old or sick, convalescent, or stressed cattle. Do not spray within 10 days after shipping, weaning, or disease exposure. Do not spray in nonventilated areas. Do not apply in conjunc- tion with phenothiazine, pyrethroids, syner- gists, or systemic organophosphate insecti- cides. 0 days. Do not apply more than once every 14 days. 0 days. Do not apply to dairy cattle within 14 days of freshening. Do not treat calves less than I month old. MOSQUITOES Annoyance may cause cattle to bunch in or near buildings and re- duce their grazing. Mosquito populations are greatest near low, wet areas, ponds, or slow-moving streams. Reduction of mosquito breeding sites is necessary for long-term control. Spray (to animals) Vapona 23.4% EC (dichlorvos) pyrethrin (0.1%) plus synergist 1 qt/6 gal water. Mist 1-2 fl oz/ animal/day. Mist 1-2 fl oz/ animal. 1 day. Do not contaminate feed or water. Do not wet skin. Do not apply in conjunction with trichlorfon. 0 days. Do not contaminate feed or water. Do not wet skin. Repeat as necessary. HORSE FLIES, DEER FLIES (NHE 60) Large flies that feed on the back, shoulders, neck, and head. Blood feeding annoys cat- tle and reduces grazing and weight gain. Wounds at- tract other flies. Adequate and practical control methods for horse flies and deer flies on pastured beef cattle are not available. Pyrethrin applications provide some relief but must be repeated frequently. Place cattle in barns or sheds to protect them from horse flies and deer flies. Spray pyrethrin (0.5- 1.0%) plus synergist 0.5% oil is ready to use; apply 2 fl oz/animal 3 times per week. Mix 1 gal 1% EC/ 10 gal water; apply 1 to 2 pt/ animal every 3 days. 0 days. Apply to head, back, sides, belly, and legs. Do not contaminate feed or water. Beef Cattle and Nonlactating Dairy Cattle, continued Pest Treatment method Insecticide and formulation Dilution and rate Preslaughter interval, restrictions, comments PASTURE FLIES (HORN FLIES, FACE FLIES, STABLE FLIES) Horn flies (NHE 59) are smaller than house flies but are similarly colored and marked. They have piercing mouthparts and are blood feeders. Horn flies congre- gate about the back, shoulders, and horns; on hot days they are mostly on the shady side of the animal or on the belly. Horn flies seldom follow ani- mals into barns or sheds. Face flies (NHE 106) resemble house flies but are slightly larger and darker. Only fe- males frequently visit cattle. They feed on secretions about the eyes, nose, and mouth. Annoyance to cat- tle reduces feed- ing. Face flies also transmit pinkeye. Face flies do not attack cattle in barns or sheds. Stable flies (NHE 61) resemble house flies but have a bayonetlike pro- boscis that pro- trudes from the front of the head. Stable flies are blood feeders that often attack the lower portion of the front legs. Sta- ble flies attack both pastured and feedlot cattle Moving cattle into barns or sheds will reduce attacks by horn flies and face flies. Estimated treatment thresholds are 15 face flies, 50 horn flies, or 4 stable flies per animal. Back rubber or face rubber (oilers) Dust bag Feed additive Mix insecticides with No. 2 fuel oil, No. 2 diesel fuel, or a label-recommended mineral oil. Mineral oils are less irritating than fuel oils. Do not use waste oil or motor oil. Service the rubbing device at least once per week. Self-treating devices are eff"ective only if they are used regularly. Place rubbing devices in the entryways to water or mineral feeders to ensure usage. Eff^ective horn fly control can be achieved with forced-use oilers, but only partial control of face flies is provided by these devices. Oilers do not control stable flies. Ciovap 12.5% EC 1 qt/4 gal fuel 0 days (crotoxyphos plus or mineral oil. dichlorvos) Co-Ral 11.6% EC 1 gal/ 13 gal fuel 0 days (coumaphos) or mineral oil. Ectiban 5.7% EC 1 qt/10 gal 0 days (permethrin) diesel oil. Ravap 28.7% EC 1 qt/7 gal fuel 0 days, (stirofos plus or mineral oil. dichlorvos) Dust bags are effective only if they are used regularly. Place them in the entryways to water or mineral feeders to ensure use. Keep dust bags dry and well charged; service at least once per week. Forced-use dust bags that contact the animal's face provide effective horn fly control and significant reductions in face flies; dust bags do not effectively control stable flies. Ciodrin 3% D (crotoxyphos) Co-Ral 1% D (coumaphos) Ectiban 0.25% D (permethrin) Rabon 3% D (stirofos) 4-8 lb/bag. 10 lb/bag. 10 lb/bag. 4-8 lb/bag. 0 days. Do not treat calves less than 6 months old. Do not treat Brahman cattle. 0 days. 0 days. 0 days. Feed additives prevent the development of face fly and horn fly larvae in cattle manure. Stable flies do not develop in fresh manure and are not controlled by feed additives. Face flies migrate considerable distances, so larval control in manure of a single herd will not significantly reduce fly populations if other herds in the area do not also receive feed additives. Animals must consume the recommended dosage for the feed additive to be effective. Altosid 0.02% (methoprene) phenothiazine 17.8% Rabon 97.3% or 7.76% Oral Larvacide (stirofos) 0.25-0.5 lb/100 lb body weight/ animal/month. Mix 1:3 with salt. Use 1 lb mixture/ 10 head/day. 70 mg a.i./lOO lb body weight/day. 0 days. Feed mineral mix or block from May to September. 0 days. Feed no other salt. Use from May to September. 0 days. Use from May through September. Mix with complete feeds, concentrates, or protein supplements. Ear tag or Ear tags impregnated with fenvalerate, flucythrinate, or permethrin and permethrin-impregnated ear ear tape tapes effectively control horn flies and provide significant reductions in face flies. They do not control stable flies. fenvalerate 8% tag (Ectrin, Insecta- Shield, Ear Tag Plus, Starbar, Vet Shack) 2 tags per head. 0 days. Apply when fly activity begins in spring; remove in fall or before slaughter. Beef Cattle and Nonlactating Dairy Cattle, continued Pest Treatment method Insecticide and formulation Dilution and rate Preslaughter interval, restrictions, comments PASTURE FLIES, cont. Ear tag or ear tape, cont. Spray flucythrinate 7.5% tag (Guardian) permethrin 10% tag (Atroban, Insecta- Gard, Gard Star, Fearing Du-flex, Gen-Sal, Permectrin) permethrin 0.9 g tape (Ectiban) 2 tags per head. 2 tags per head. 1 tape per animal. 0 days. Apply when fly activity begins in spring; remove in fall or before slaughter. 0 days. Apply when fly activity begins in spring; remove in fall or before slaughter. 0 days. Apply when fly activity begins in spring; remove in fall or before slaughter. Sprays directed to animals should not contaminate feed or water. Giovap 12.5% EC (crotoxyphos plus dichlorvos) Co-Ral 11.6% EC. or 25% WP (coumaphos) Ectiban 5.7% EC (permethrin) Ectrin 10% WDL (fenvalerate) Rabon 50% WP (stirofos) Ravap 28.7% EC (stirofos plus dichlorvos) 1 pint/ 1.5 gal water. Use 1-2 fl oz mist/animal/day. OR: 2 gal/50 gal water. Use 1-2 qt/animal. 2 qt 11.6% EC or 2 lb 25% WP/ 100 gal water. Completely wet skin to runoff. 1 qt/100 gal water. Thoroughly wet animals. 8 oz/2'/2 gal water. Mist 2-3 fl oz/animal every 4-7 days. Or mix 8 oz/12 gal water. Use 1 qt/ animal every 7 days. 4 lb/75 gal water. Use V2 to 1 gal/animal. 1 gal/75 gal water. Use V2 to 1 gal/animal. 0 days. 0 days. Repeat as needed, but not more often than once every 7 days. 0 days. Do not apply to dairy cattle within 14 days of freshening. 0 days. Repeat as needed, but not more often than once every 14 days. 0 days. State-labeled use; applicator must have label in possession. 0 days. Beef cattle only. 0 days. Beef cattle only. Repeat as needed, but not more often than once every 10 days. Beef Cattle and Nonlactating Dairy Cattle, continued Pest Treatment method Insecticide and formulation Dilution and rate Preslaughter interval, restrictions, comments FLIES IN BEEF CATTLE BUILD- INGS AND PREMISES (HOUSE FLIES, STABLE FLIES) House flies (NHE 16) develop in any moist, decaying or- ganic matter. They annoy cattle and transmit several diseases of animals and humans. Stable flies (NHE 61) resemble house flies but bear bayo- netlike mouth- parts. Stable flies are blood feeders that usually attack lower portions of the front legs. Sta- ble flies attack both pastured and feedlot cattle. Sanitation is essential for successful fly control in buildings and premises. Thorough sanitation includes weekly removal of manure and decaying hay, straw, and wasted feed, especially from beneath feed bunks and along fences. When manure is piled, cover with black plastic to prevent stable fly development. If intervals between manure removals are greater than 1 week, leave an 8-inch manure residue to enhance biological control. Mist blower or fogger Residual wall spray Dibrom 1% (naled) Ectiban 5.7% EC (permethrin) Vapona 23.4% EC (dichlorvos) Vapona Feedlot 43.2% EC (dichlorvos) 1 fl oz/3,000 cu ft. Misting: Use 4 fl oz/ 1,000 sq ft. Overhead system: 1 qt/12.5 gal diesel or mineral oil; use 4 fl oz/ 1,000 cu ft. Misting: 1 pint/6 gal water; use 1 qt/8,000 cu ft. Fogging: 1 pint/ 3.5 gal diesel oil. Use 1 pint/ 8,000 cu ft. 1 gal/ 100 gal water. Use 5 gal/acre. 0 days. Use in livestock buildings and pens. Can be applied when animals are present, but do not apply directly to livestock. Avoid con- tamination of feed and water. 0 days. Do not apply directly to livestock. Do not treat manure or litter Do not contaminate feed or water Repeat as needed, but not more often than every 14 days. 0 days. Use in livestock buildings and reduce air movement during application. Avoid con- tamination of feed and water 0 days. Use in outdoor facilities. Animals may be present during application. Avoid contam- ination of feed and water. Baytex 45% EC (fenthion) Cygon 23.4% EC (dimethoate) diazinon 50% WP Ectiban 25% WP or 5.7% EC (permethrin); Atro- ban, Insectrin, Overtime, and Permectrin are addi- tional permethrin formu- lations with state labels for use as residual wall sprays. Rabon 50% WP (stirofos) Ravap 28.7% EC (stirofos plus dichlorvos) 3 qt/25 gal water Use 1 gal/500 sq ft. 1 gal/25 gal water. Use 1-2 gal/ 1,000 sq ft. 2 lb/25 gal water Use 1-2 gal/ 1,000 sq ft. 6 oz 25% WP/11 gal water or 1 qt 5.7% EC/ 12.5 gal water Use 1 gal/750 sq ft. Or use 4 fl oz 5.7% EC (undiluted)/ 1,000 sq ft with a mist blower. 4-8 lb/25 gal water. Use 1 gal/500-1.000 sq ft. 1 gal/25 gal water Use 1 gal/500-1,000 sq ft. 0 days. Avoid contaminating feed and water. Remove animals before spraying. Keep them out for at least 4 hours. Provides control for 2-5 weeks. 0 days. Avoid contaminating feed and water. Remove animals before spraying. Keep them out for at least 4 hours. Provides control for 2-4 weeks. 0 days. Avoid contaminating feed and water Remove animals before spraying. Keep them out for at least 4 hours. Provides control for 2-4 weeks. 0 days. Do not treat manure or apply directly to livestock. Avoid contaminating feed and water Provides control for 3-7 weeks. 0 days. Avoid contaminating feed and water. Remove animals before spraying and keep them out for at least 4 hours. Provides control for 2-4 weeks. 0 days. Avoid contamination of feed and water. Remove animals before spraying and keep them out for at least 4 hours. Provides control for 2-4 weeks. Beef Cattle and Nonlactating Dairy Cattle, continued Pest Treatment method Insecticide and formulation Dilution and rate Preslaughter interval, restrictions, comments FLIES IN BEEF CATTLE BUILD- INGS AND PREMISES, com. Fffcl additive Manure drench Feed additives (listed in conjunction with pasture fly control) used to prevent the development of fly larvae in feces provide minimal control of flies in livestock buildings. Feed additives do not reach house fly and stable fly larvae that develop in sites other than fresh manure. Good sanitation more effectively prohibits larval development. Manure drenches control fly larvae that are developing in treated feces. Migration of adult flies from nearby areas can occur if any breeding sites remain untreated. Manure drenches are recommended only where manure cannot be removed on a weekly basis. Apply drenches at rates that wet the manure surface; soaking is not necessary. Repeat applications as necessary, but not more often than every 7 days. Do not apply where mammals or birds will come in contact with the manure. Do not apply treated manure to crops not listed on the insecticide label. Cygon 23.4% EC (dimethoate) Rabon 50% WP or 24% EC (stirofos) Ravap 28.7% EC (stirofos plus dichlorvos) Vapona 23.4% EC (dichlorvos) 0.5 pt/5 qt 0 days, water. Apply as a coarse spray. 4 lb 50% WP or 0 days. 1 gal 24% EC/25 gal water. Use 1 gal/ 100 sq ft manure. 1 gal/25 gal 0 days, water. Use 1 gal/ 100 sq ft manure. 1 gal/25 gal 0 days, water. Use 1-2 qt/100 sq ft manure. Lactating Dairy Cattle Insecticides listed in this section are registered for use on lactating dairy cattle. Most insecticides listed for use on beef cattle can be applied to nonlactating dairy cattle if the specified interval between application and freshening is observed. Follow all label directions. Pest Treatment method Insecticide and formulation Dilution and rate Preslaughter intei^al, restrictions, comments LICE (NHE 18) '/i6 to V» inch long. Biting lice are red- dish, flattened, and active. Sucking lice are gray to blue and sluggish. Heavy populations cause reduced milk production and anemia. Symptoms are rough, patchy hair coats and a dirty appearance. Most troublesome in winter Dust bag Spray Place dust bags at milkroom exits. Keep bags changed and dry, and service at least once per month. (Both Co-Ral 1% dust and Ciodrin 3% dust can be used for direct hand-dusting; follow label directions.) Co-Ral 1% D (coumaphos) Ciodrin 3% D (crotoxyphos) 10 lb dust/bag. 0 days. 4-8 lb dust/bag. 0 days. Do not treat calves less than 6 months old. Apply sufficient spray to thoroughly wet each animal: use up to I gallon finished spray per animal. Do not contaminate feed, water, milk, or milking equipment. Ciovap 12.5% EC (crotoxyphos plus dichlorvos) Co-Ral 1 1 .6% EC or 25% WP (coumaphos) Ectiban 5.7% EC (permethrin) 1 qt/12 gal water. 1 qt 11.6% EC or 1 lb 25% WP/100 gal water. 1 qt/100 gal water. 0 days. Make a second application 10-14 days after first. Repeat as needed, but not more than once every 7 days. 0 days. Do not treat calves less than 3 months old. 0 days. Repeat application 14-21 days after first treatment. Lactating Dairy Cattle, continued Pest Treatment method Insecticide and formulation Dilution and rate Preslaughter interval, restrictions, comments CATTLE GRUBS No pesticides are currently registered for control of cattle grubs on lactating dairy cattle. MANGE MITES Microscopic mites live on or within skin. Lesions vary with mite species. Infestations are greatest when cat- tle are crowded in shelters during winter. Mange caused by chorioptic mites (barn itch mites) is the most common mite-induced disorder of Illinois dairy cattle. Infested cattle may or may not develop lesions; lesions usually appear as localized nodules that exude serum. Lesions are most prevalent from the tailhead to the hind heels. Insecticides listed for louse control on dairy cattle also control chorioptic mange. Cattle scabies (psoroptic mange) is a quarantinable disease. Its symptoms are lesions that occur first at the withers, over the back, and at the tailhead. The wounds itch, and rubbing leads to absesses, especially on the shoulders and rump. Mites move to edges of scabs, causing lesions to enlarge and coalesce. Scabs may cover much of the body. Where cattle scabies is detected, contact the Illinois Department of Agriculture, Bureau of Animal Health, Illinois State Fairgrounds, Springfield, Illinois 62706, 217/782-4944. TICKS 8-legged adults of most species are reddish brown and less than '/4 inch long. Engorged fe- males may exceed '/2 inch in length. Ticks are blood feeders and disease vectors. Ticks are rarely economically important on Illinois dairy cattle. Problems are most likely where cattle graze in brushy or wooded areas. Spray Ciovap 12.5% EC (crotoxyphos plus dichlorvos) Ciodrin 14.4% EC (crotoxyphos) Ectiban 5.7% EC (permethrin) 1 qt/I2gal water. Use up to I gal/animal. 1 qt/12 gal water. Use up to 1 gal/animal. I qt/25 gal water. Use 1-2 qt/animal. 0 days. Make a second application 10-14 days after first. Do not apply more often than once every 7 days. 0 days. Make a second application 10-14 days after first. Do not apply more often than once every 7 days. 0 days. Do not apply more often than once every 14 days. MOSQUITOES Blood feeding. An- noyance may cause cattle to remain in buildings and re- duce their grazing. Mosquito populations are greatest near low, wet areas, ponds, and slow-moving streams. Reduction of mosquito breeding sites is necessary for long-term control. Spray (to animals) Vapona 23.4% EC (dichlorvos) pyrethrin (0.03- 0.10%) plus synergist (0.5- 1.0%) I qt/6 gal water. Mist 1-2 fl oz/animal/day. Ready to use. Mist 1-2 fl oz/ animal. 1 day. Do not wet skin. Do not contaminate feed, water, milk, or milking equipment. 0 days. Do not wet skin. Do not contaminate feed, water, milk, or milking equipment. Re- peat as necessary. PASTURE FLIES (HORN FLIES, FACE FLIES, STABLE FLIES) Horn flies (NHE 59) are smaller than house flies but are similarly colored and marked. They have piercing mouthparts and are blood feeders. Horn flies congre- gate about the back, shoulders, and horns; on hot days they are mostly on the shady side of the animal or on the belly. Horn flies seldom follow ani- mals into barns or sheds. Reduce attacks by horn flies, face flies, deer flies, and horse flies by moving cattle into barns or sheds. Back rubber or Mix insecticides with No. 2 fuel oil. No. 2 diesel fuel, or a label-recommended mineral oil. Mineral face rubber oils are less irritating than fuel oils. Do not use waste oil or motor oil. Service the oiler at least once (oilers) per week. For self-treating devices to be effective, cattle must use them frequently. Place oilers in the entryways to water or mineral feeders or in the milking room exit. Well-used back rubbers or face rubbers will control horn flies and provide some face fly control. They will not control stable flies. Ciodrin 14.4% EC (crotoxyphos) 1 gal/ 1 6 gal fuel or mineral oil. 0 days, Ciovap 12.5% EC (crotoxyphos plus dichlorvos) I gal/ 1 6 gal fuel or mineral oil. 0 days. Co-Ral 11.6% EC (coumaphos) I gal/ 1 3 gal fuel or mineral oil. 0 days. Ectiban 5.7% EC (permethrin) I qt/IO gal oil. 0 days. 10 Lactating Dairy Cattle, continued Pest Treatment method Insecticide and formulation Dilution and rate Preslaughter interval, restrictions, comments PASTURE FLIES, cont. Face flies (N HE 106) resemble house flies but are slightly larger and darker. Only fe- males frequently visit cattle. They feed on secretions about the eyes, nose, and mouth. Annoyance to cat- tle reduces feed- ing. Face flies also transmit pinkeye. Face flies do not attack cattle in barns or sheds. Stable flies (NHE 61) resemble house flies but have a bayonetlike pro- boscis that pro- trudes from the front of the head. Stable flies are blood feeders that often attack the lower portion of the front legs. Sta- ble flies attack both pastured and feedlot cattle. Uust bag Spray For self-treating devices to be effective, cattle must use them regularly. Place dust bags in the entryways to water or mineral feeders or in the milking room exit. Keep dust bags dry; service at least once per week. Dust bags will control horn flies and provide some reduction in face fly problems. They will not control stable flies. (NOTE: Insecticide dusts listed below can also be used for direct hand-dusting; follow label directions.) Ciodrin 3% D (crotoxyphos) Co-Ral \7c D (coumaphos) Ectiban 0.257c D (permethrin) Rabon 3% D (stirofos) 4-8 lb/dust bag. 10 lb/dust bag. 10 lb/dust bag. 4-8 lb/dust bag. 0 days. Do not treat calves less than 6 months old. 0 days. Do not treat calves less than 3 months old. 0 days. 0 days. It is important that the following sprays do not contaminate feed, water, milk, or milking equipment. 0 days. Ciovap 12.5"% EC (crotoxyphos plus dichlorvos) Ectiban 5.7% EC (permethrin) Ectrin 10% WDL (fenvalerate) Vapona 23.4% EC or 1% EC oil base (dichlorvos) pyrethrin (0.1%) plus synergist 1 qt/3 gal water. Mist 1-2 fl oz/ animal/day. 1 qt/25 gal water. Use 1-2 qt/animal. 8 oz/2'/2 gal water; mist 2-3 oz/animal every 4-7 days. OR: 8 oz/12 gal water; use 1 qt/animal every 7 days. 1 qt 23.4%/6 gal water; use 1-2 fl oz/animal/ day. OR: 1% EC (oil base), ready to use; mist 1-2 fl oz/animal/ day. Ready to use. Apply 1-2 fl oz/animal. 0 days. Retreat as needed, but not more often than every 14 days. 0 days. State-labeled use; applicator must have label in possession. 0 days. Do not wet skin. 0 days. Repeat as needed. Feed additive Animals must consume the recommended dosage for the feed additive to be effective. A feed additive reduces fly development only in treated manure; it does not control existing adult flies. Increase control by practicing good sanitation; remove nearby manure, silage, feed, and other fly-breeding materials. Rabon 97.3% or 7.76% Oral Larvicide (stirofos) 70 mg a.i./lOO lb body weight/day. 0 days. Feed in complete feeds, concentrates, or protein and mineral supplements from May to September. 11 Lactating Dairy Cattle, continued Pest Treatment method Insecticide and formulation Dilution and rate Preslaughter interval, restrictions, comments PASTURE FLIES, cent. Ear tag or ear tape Ear tags and ear tapes effectively control horn flies and reduce face fly problems. They do not control stable flies. fenvalerate 8% ear tag (Ectrin, Insecta-Shield, Ear Tag Plus, Starbar, Vet Shack) flucythrinate 7.5% tag (Guardian) permethrin 10% ear tag (Atroban, Insecta-Gard, Gard Star, Fearing, Permectrin, Wellcome Tag) permethrin 0.9 g ear tape (Ectiban) 2 tags per head. 2 tags per head. 2 tags per head. 0 days. Apply tags when flies first appear in the spring. Remove in fall or before slaughter. 0 days. Apply when fly activity begins in spring; remove in fall or before slaughter. 0 days. Apply tags when flies first appear in spring. Remove in fall or before slaughter. 1 tape per animal. 0 days. Apply tape when flies first emerge in spring. Remove in fall or before slaughter. FLY CONTROL IN DAIRY BUILDINGS AND PREMISES OTHER THAN MILKING ROOMS (HOUSE FLIES, STABLE FLIES) House flies (NHE 16) develop in any moist, decaying or- ganic matter. They annoy cattle and transmit several diseases of animals and humans. Stable flies (NHE 61) resemble house flies but bear bayo- netlike mouth- parts. Stable flies are blood feeders that usually attack lower portions of the front legs. Sta- ble flies attack both pastured and feedlot cattle. Sanitation is essential for effective fly control in and around dairy buildings. In addition to removing manure weekly, regularly clean calf pens and remove spilled hay, green chop, and silage. Cover manure piles with black plastic to prevent stable fly breeding. If manure is not removed weekly, leave an 8-inch manure residue at each cleanup; this residue maintains biological control agents. Mist blower or fogger Space sprays listed below should not be applied directly to livestock or manure. 0 days. Avoid contamination of feed and water. Dibrom 1% (naled) Ectiban 5.7% EC (permethrin) Vapona 23.4% EC (dichlorvos) Vapona Feedlot 43.2% EC (dichlorvos) pyrethrin (0.1%) plus synergist 1 fl oz/3,000 cu ft. Misting: Use 4 fl oz/ 1,000 sq ft. Overhead system: I qt/12.5 gal diesel oil or mineral oil; use 4 fl oz/I,000 cu ft. Misting: 1 pt/6 gal water; use 1 qt/ 8,000 cu ft. Fogging: 1 pt/3.5 gal diesel oil; use 1 pt/ 8,000 cu ft. I gal/ 1 00 gal water. Apply over dairy lot at 5 gal spray/acre. Apply as directed on container. 0 days. Do not contaminate feed or water. Do not apply more than once every 14 days. 0 days. For use in dairy barns. Close doors and windows to reduce air movement during application. Avoid contamination of feed and water. 0 days. Animals may be present during treat- ment. Avoid contamination of feed and water. 0 days. Use as space spray for quick knock- down. Residual wall spray Residual treatments not apply directly to Baytex 45% EC (fenthion) Cygon 23.4% EC (dimethoate) listed below are not to be applied in milking rooms unless otherwise noted. Do livestock or manure. Do not contaminate feed, water, milk, or milking equipment. 3 qt/25 gal water. Use 1 gal/500 sq ft. 1 gal/25 gal water. Use 1-2 gal/ 1.000 sq ft. 0 days. Remove all animals before spraying. Keep them out of treated buildings for at least 4 hours. Provides control for 2-5 weeks. 0 days. Remove all animals before spraying. Keep them out of treated buildings for at least 4 hours. Provides control for 2-4 weeks. 12 Lactating Dairy Cattle, continued Pest Treatment method Insecticide and formulation Dilution and rate Preslaughter interval, restrictions, comments FLY CONTROL IN DAIRY BUILDINGS, RfsKlual wall spray, cont. Feed additive Bait Fly strip Fctiban 2b7c WP or 5.77c EC (permethrin): Atroban, Insectrin, Over- time, and Permectrin are additional permethrin formulations with state labels for use as residual wall sprays. Rabon 50% WP (stirofos) Ravap 28.7% EC (stirofos plus dichlorvos) 6 oz 25% WP/II gal water or 1 qt 5.7% EC/ 1 2.5 gal water. Apply 1 gal/750 sq ft. Or use 4 fl oz 5.7% EC (undiluted)/ 1 ,000 sq ft with a mist sprayer. 4-8 lb/25 gal water. Use 1-2 gal/ 1, 000 sq ft. 1 gal/25 gal water. Use 1-2 gal/ 1, 000 sq ft. 0 days. Retreat as needed, but not more than once every 14 days. Provides control for 3-7 weeks. 0 days. Remove all animals before spraying. Keep them out of treated buildings for at least 4 hours. Provides control for 2-4 weeks. 0 days. Remove all animals before spraying. Keep them out of treated buildings for at least 4 hours. Provides control for 2-4 weeks. Animals must consume the recommended dosage for the feed additive to be effective. A feed additive reduces fly development only in treated manure; it does not control existing adult flies. Increase control by practicing good sanitation; remove nearby manure, silage, feed, and other fly-breeding materials. Rabon 97.3% or 7.76% Oral Larvicide (stirofos) 70 mg a.i./lOO lb body weight/day. 0 days. Feed in complete feeds, concentrates, or protein and mineral supplements from May to September. Dipterex 1% Dry (trichlorfon) Vapona 0.5% Dry (dichlorvos) Use 4 oz/1,000 sq ft. Use 0.25 lb/ 1 ,000 sq ft. 0 days. Place in areas where flies congregate, but not where animals can contact bait. Do not contaminate food, water, milk, or milking equipment. 0 days. Place in areas where flies congregate, but not where animals can contact bait. Do not contaminate food, water, milk, or milking equipment. Vapona Strips (dichlorvos) Suspend I strip/ 1,000 cu ft. 0 days. Dichlorvos strips can be used in milk- rooms. Some milk associations may recom- mend against their use. Keep doors and win- dows closed to retain vapors. Do not hang near light bulbs or within reach of animals. CONTROL OF FLIES IN MILK- ING ROOMS Although eff^ective fly control is essential in dairy barns and milkrooms, small amounts of pesticides can be detected in milk, and their presence is often illegal. To control flies and avoid residue problems, the following steps are recommended: 1. Use good sanitation and recommended insecticides in dairy barns to reduce the number of flies entering the milkroom. 2. Use sticky fly strips where appropriate. 3. Use tight screens (14-16 mesh) on milkroom doors and windows. Copper, aluminum, bronze, plastic, or rust-resisting screens are best. 4. Dichlorvos resin strips will give excellent control if windows and doors are kept closed when one strip per 1,000 cubic feet of space is used. Replace strips when they become ineff"ective. 5. Use a mist or aerosol spray of 0.06-0.1% pyrethrins plus piperonyl butoxide oil-base fly sprays in the milkroom when resin strips do not give adequate fly control. To prevent milk cf)ntamination, cover all milking utensils, cans, bulk tanks, and containers before spraying. 13 Hogs Pest Treatment method Material and formulation Dilution and rate Preslaughter interval, restrictions, comments MANGE MITES (AND LICE) Microscopic mites feed on or within skin and cause tnange. Sarcoptic mange usually starts at the head and then spreads back; in- fested skin be- comes dry, scurfy, or leathery. Rub- bing may lead to raw or scabby areas. Demodectic mange is charac- terized by hard, round swellings on or below the skin surface. Sarcoptic mange can be controlled effectively with the insecticides listed below. Although these insecticides will aid in controlling demodectic mange, there is no satisfactory chemical control for the hog follicle mites that cause demodectic mange. Prevent sarcoptic mange outbreaks by treating pigs as soon as possible after weaning; treat sows 30-45 days before farrowing; treat boars before the breeding season. Follow label precautions against the use of organophosphate sprays, dusts, or pour-ons simultaneously with medications used for internal parasite control. Do not contaminate feed or water. Isolate hogs with demodectic mange. Kill and destroy severely infested animals; market for slaughter the animals that are less severely attacked. Clean and disinfect pens, sheds, etc., before moving in uninfested animals. Spray Ectiban 5.7% EC (permethrin) lindane 12.4% EC or 20% EC malathion 57% EC 1 qt/25 gal water. Spray animals thoroughly. 3 pt 12.4% EC or 1 qt 20% EC/ 100 gal water. Spray animals thoroughly. 1 qt/15 gal water. Treat animals, bedding, and walls thoroughly. 5 days. Repeat application after 14 days. 30 days. Treat twice at a 7-day interval. Do not treat pigs less than 3 months old. Do not treat sows within 2 weeks before farrowing or 3 weeks after farrowing. 0 days. Do not treat pigs less than 1 month old. Repeat treatment after 10 days. Dust malathion 4-5% D Thoroughly cover animals over 1 month old. Also treat pens and bedding. Use '/4-'/2 tbsp/pig for pigs less than 1 month old. 0 days. Repeat as needed. Gives only partial control of mange mites. LICE Up to V^ inch long. Hog lice suck blood and cause ir- ritation and itch- ing of skin. Ani- mals may rub infested areas and cause bleeding. In- fested animals ap- pear generally un- thrifty. Insecticides listed for controlling mange mites on hogs will also control label precautions against the use of organophosphate sprays, dusts, or for internal parasite control. Spray Ciodrin 14.4% EC (crotoxyphos) Co-Ral 25% WP (coumaphos) methoxychlor 50% WP 1 qt/12 gal water. Spray each animal thoroughly. 2 lb/ 100 gal water. Spray each animal thoroughly. 8 lb/ 100 gal water. Spray each animal thoroughly. lice. Do not contaminate feed or water. Follow pour-ons simultaneously with medications used 0 days. Apply a second spray 10-14 days after first. Do not treat more often than every 7 days. 0 days. Do not treat animals less than 90 days old. Apply a second spray 10-14 days after first. 0 days. Make second application 14 days after first if needed. Dust Co-Ral 1% D (coumaphos) Ectiban 0.25% D (permethrin) Rabon 3% D (stirofos) 1 oz/animal. 1 oz/animal. 3-4 oz/animal; 1 lb/ 150 sq ft of bedding for severe infestations. 0 days. Dust especially around shoulders and back. Repeat as needed, but not more than once every 10 days. 5 days. Make second application 14 days after first. 0 days. Do not retreat for 14 days. Pour-on Tiguvon 3% Pour-On (fenthion) 0.5 fl oz/100 lb body weight. 1 4 days. May be used on gestating and lactating sows. Do not retreat within 35 days. 14 Hogs, continued Pest Treatment method Insecticide and formulation Dilution and rate Preslaughter interval, restrictions, comments HOUSE FLIES, STABLE FLIES House flies (NHF. 16) arc a general annoyance to swine and other animals. Stable flies (NHE 16) have piercing mouthparts used for blood sucking. Thev can signifi- cantly reduce ani- mal performance. House flies and stable flies develop in moist, decaying organic matter. Remove bedding, manure, and wastes from inside and around buildings every 5-7 days. Spread wastes thinly on pastures or store wet in pits or lagoons. Good sanitation practices reduce fly breeding and increase the success of chemical control eff^orts. Mist blower or fogger Residual wall spray Bait Fly strip Dibrom \7c (naled) Fxtiban 5.7% EC (permelhrin) Vapona 23.4% EC (dichlorvos) pyrethrin (0.1%) plus synergist 1 fl oz/3.000 cu ft. Daily use is necessary when used alone. Misting: Use 4 fl oz/ 1 ,000 sq ft. Overhead system: 1 qt/12.5'gal diesel or mineral oil; use 4 fl oz/ 1,000 cu ft. Misting: 1 pt/6 gal water; use 1 qt/8,000 cu ft. Fogging: 1 pt/3.5 gal diesel oil. Use 1 pt/8,000 cu ft. Apply as directed on container. 0 days. Do not apply directly to livestock. Reduce air movement. Avoid contamination of feed and water. 0 days. Do not treat manure or litter. Retreat as needed but not more than once every 2 weeks. 0 days. Nozzles should be directed away from livestock. 0 days. Do not apply directly to animals. Re- duce air movement as much as possible. Avoid contamination of feed and water. 0 days. Space spray for quick knockdown. Ciovap 12.5% EC (crotoxyphos plus dichlorvos) Cygon 23.4% EC (dimethoate) Ectiban 25% WP or 5.7% EC (permethrin); Atroban, Insectrin, Over- time, and Permectrin are additional permethrin formulations with state labels for use as residual wall sprays. Rabon 50% WP (stirofos) Ravap 28.7% EC (stirofos plus dichlorvos) 2 gal/25 gal water. Use 1-2 gal/ 1 ,000 sq ft. 1 gal/25 gal water. Use 1-2 gal/ 1,000 sq ft. 6 oz 25% WP/11 gal water or 1 qt 5.7% EC/ 12.5 gal water. Use 1 gal/750 sq ft. Or direct 4 fl oz 5.7% EC (undiluted)/ 1,000 sq ft with a mist sprayer. 4-8 lb/25 gal water. Use 1 gal/500-1,000 sq ft. 1 gal/25 gal water. Use 1 gaI/500- 1,000 sq ft. 0 days. Spray at least twice monthly. Do not apply directly to livestock. Avoid contamina- tion of feed and water. 0 days. Remove all animals before spraying buildings. Do not apply directly to livestock. Avoid contamination of feed and water. 0 days. Do not apply directly to livestock. Avoid contamination of feed and water. Do not treat manure. Retreat as needed, but not more than once every 2 weeks. 0 days. Do not apply directly to livestock. Avoid contamination of feed and water. 0 days. Do not apply directly to livestock. Avoid contamination of feed and water. Dipterex 1% Dry (trichlorfon) Vapona 0.5% Dry (dichlorvos) 4 oz/ 1.000 sq ft. 0.25 lb/ 1,000 sq ft. 0 days. Place in areas where flies congregate during the day. Do not place in areas where animals can come in contact with bait or where bait can contaminate water. 0 days. Place in areas where flies congregate during the day. Do not place in areas where animals can come in contact with bait or where bait can contaminate water. Vapona Strips (dichlorvos) Suspend 1 strip/ 1,000 cu ft. 0 days. Doors and windows must be closed so that vapors can build up to recommended levels. Do not hang near light bulbs or within reach of animals. 15 Hogs, continued Pest Treatment method Insecticide and formulation Dilution and rate Preslaughter interval, restrictions, comments HOUSE FLIES, STABLE FLIES, cent. Manure drench Use manure drenches to kill fly larvae that are developing in animal feces. Do not treat more than once every 7-10 days or apply where mammals or birds will contact treated manure. Do not apply treated manure to crops not listed on the insecticide label. Cygon 23.4% EC (dimethoate) Rabon 50% WP or 24% EC (stirofos) Ravap 28.77c EC (stirofos plus dichlorvos) Vapona 23.4% EC (dichlorvos) 0.5 pt/5 qt 0 days, water. Apply as a coarse spray. 4 lb 50% WP or 0 days. 1 gal 24% EC/25 gal water. Use 1 gal/ 100 sq ft manure. 1 gal/25 gal 0 days. water. Apply 1 gal/ 100 sq ft manure. 1 gal/25 gal water. 0 days. Apply 1-2 qt/100 sq ft manure. Sheep Pest Treatment method Material and formulation Dilution and rate Preslaughter interval, restrictions, comments KEDS, LICE Spray (NHE 53) Sheep keds (also called sheep ticks) are flattened, wingless, reddish brown flies about the size of house flies. Lice reach '/le to '/s inch in length. Bit- ing lice are flat- tened and yellow- ish to reddish in color. Sucking lice are oval and bluish gray. Dust Apply enough spray to thoroughly cover each animal. Do not contaminate feed or water. Ciovap 12.5% EC (crotoxyphos plus dichlorvos) Co-Ral 25% WP (coumaphos) malathion 57% EC diazinon 50% WP Marlate 50% WP (methoxychlor) Co-Ral 0.5% D diazinon 2% D malathion 4-5% D Marlate 50% WP (methoxychlor) 2 gal/ 100 gal water. Use up to 1 gal/animal. Lice: 2 lb/ 100 gal water. Keds: 4 lb/ 100 gal water. 1 gal/ 100 gal water. 0.5 lb/ 100 gal water. Use 1 gal/animal. 8 lb/ 100 gal water. Spray each animal thoroughly. 0 days. Make second application 10-14 days later. Do not retreat within 7 days. 15 days. Do not treat lambs less than 3 months old. 0 days. Do not treat lambs less than 1 month old. 14 days. Use high pressure and volume. Do not treat lambs less than 2 weeks old. 0 days. Follow label directions. 1/2 oz/animal. 1-2 oz/animal. 1 tbsp/animal. 15 days. Treat once after shearing. Do not treat lambs less than 3 months old. 14 days. Do not treat lambs less than 2 weeks old. 0 days. Repeat application in 2-3 weeks if needed. Do not treat lambs less than 1 month old. 0 days. Treat only once. 16 Sheep, continued Pest Treatmcnl method Insecticide and formulation Dilution and rate Preslaughter interval, restrictions, comments WOOL MAGGOTS Cream-colored maggots are larvae of blow flies. Mag- gots live in wet, matted wool near the rear of the an- imal and in matted wool surrounding wounds. Spray Reduce woo! maggot attacks by tagging sheep (shearing under the tail and between the hind legs), docking, and castrating before May. Practice good sanitation. Shear around and direct sprays to the infested areas. Co-Ral 257c WP (coumaphos) diazinon 50% WP 4 lb/ 100 gal water. Use 1 gal/ animal. 0.5 lb/100 gal water. Use 1 gal/ animal. 1 5 days. Do not treat lambs less than 3 months old. 1 4 days. Do not treat lambs less than 2 weeks old. SCAB MITES (SCABIES, WET MANGE) Sheep scab is a quarantinable disease. Infested animals shed wool; skin becomes roughened and crusted. Where infestations are suspected, contact the Illinois Department of Agriculture, Bureau of Animal Health, Illinois State Fairgrounds, Springfield, Illinois 62706, 217/782-4944. HORN FLIES (NHE 59) Spray Co-Ral 25% WP (coumaphos) Marlate 50% WP (methoxychlor) 2 lb/ 100 gal water. 2 lb/ 1 00 gal water. 1 5 days. Do not treat lambs less than 3 months old. 0 days. Repeat treatment every 3 weeks as needed. FACE FLIES (NHE 106) Spray pyrethrin (0.05- 0.10%) plus synergist (0.5-1.0%) 1-2 fl oz/animal. 0 days. Apply daily to head, neck, and front legs as a fine mist. Do not wet hair or skin. Goats Pest Treatment method Material and formulation Dilution and rate Preslaughter interval, restrictions, comments LICE (NHE 53) Spray Ciovap 12.5% EC (crotoxyphos plus dichlorvos) 2 gal/ 100 gal water. Use 2-4 qt/animal. 0 days. Make second application 14 days after first. Do not apply more often than every 7 days. Do not contaminate feed, water, milk, or milking equipment. FACE FLIES (NHE 106). HORN FLIES (NHE 59). STABLE FLIES (NHE 61) Spray Ciovap 12.5% EC (crotoxyphos plus dichlorvos) 1 qt/3 gal water. Use 1 pt/animal/ week. 0 days. Do not apply more often than every 7 days. Do not contaminate feed, water, milk, or milking equipment. HORSE FLIES, DEER FLIES (NHE 60) Spray pyrethrin (0.05- 0.10%) plus synergist (0.5-1.0%) 1-2 fl oz/animal. 0 days. Apply to head, neck, and front legs as a fine mist. Do not wet hair or skin. 17 Poultry Pest Treatment method Material and formulation Dilution and rate Preslaughter interval, restrictions, comments LICE, NORTH- Spray ERN FOWL MITES (BIRD TREATMENT) (NHE 54) Chicken lice are flat-bodied, straw- colored, '/i6-inch- long lice with chewing mouth- parts. They feed on feathers and skin flakes, irritat- ing birds. Severe infestations reduce egg production. Northern fowl mites are dark red to black blood feeders that build up in the vent area. Mature mites are roughly '/25 inch long. Feathers around the vent appear grayish or Dust black from accu- mulation of mites, mite eggs, and ex- crement. Severe infestations reduce egg production and can cause death. Northern fowl mites are most troublesome in winter. Co-Ral 25% WP (coumaphos) Ectiban 5.7% EC (permethrin) malathion 57% EC Rabon 50% WP (stirofos) Ravap 28.7% EC Poultry Spray and Larvicide (stirofos -I- dichlorvos) Sevin 50% WP or 80% SP (carbaryl) Lice: 6 oz/5 gal water. Mites: 3 oz/5 gal water. Use 1 gal/ 1 00- 125 birds, or 0.5 fl oz/bird. 1 qt/25 gal water. Use 1 gal/ 100 birds. 1 fl oz/gal water. Use 1 gal/ 1 00- 125 birds. 6.5 oz/5 gal water. Use 1 gal/100 birds or 1 fl oz/bird using at least 100-125 psi. 1 pt/6 gal water. Use 1 gal/100 birds or 1 fl oz/bird using at least 100-125 psi. 6 oz 50% WP or 4 oz 80% SP/5 gal water. Use 1 gal/ 100 birds. 0 days. Do not treat more than once per week. Do not treat within 10 days of vaccination or stress. 0 days. Treat vent area thoroughly. 0 days. Repeat treatment in 4-8 weeks or when necessary. 0 days. Do not treat more than once every 14 days. 0 days. Do not treat more than once every 14 days. 7 days. Repeat treatment in 4 weeks if nec- essary. Ectiban 0.25% D (permethrin) malathion 4-5% D Rabon 3% D (stirofos) Sevin 5% D (carbaryl) Use 1 lb/ 100 birds. Use 1 lb/ 100 birds. Use 1 lb/300 birds. Use 1 lb/ 100 birds. 0 days. Apply with shaker or hand duster. Treat vent area thoroughly. 0 days. Apply with shaker or hand duster. 0 days. Apply with hand or power duster. Do not treat more than once every 14 days. 7 days. Apply with shaker or hand duster. Do not treat more than once every 4 weeks. LICE, CHICKEN MITES, NORTH- ERN FOWL MITES (POUL- TRY HOUSE AND LITTER TREATMENT) (NHE 54) Chicken mites (or roost mites) are bright to dark red and !45 inch long. They hide in cracks and crevices during the day and feed on birds at night. They are most prevalent in spring, summer, and fall, not in winter. Spray Co-Ral 25% WP (coumaphos) malathion 57% EC Rabon 50% WP (stirofos) Ravap 28.7% EC Poultry Spray and Larvicide (stirofos -t- dichlorvos) Sevin 50% WP or 80% SP (carbaryl) 6 oz/5 gal water. Use 1 gal/ 1,000 sq ft. 2 fl oz/gal water. Use 1 gal/ 1,000 sq ft. 0.5 lb/6 gal water. Use 1-2 gal/ 1,000 sq ft. 1 pt/6 gal water. Use 1-2 gal/ 1,000 sq ft. 2 lb 50% WP or 1.5 lb 80% SP/5 gal water. Use 1-2 gal/ 1,000 sq ft. 0 days. Apply thoroughly to litter, walls, ceil- ings, floors, roosts, nests, and adjacent areas. Force spray into all cracks and crevices. 0 days. Apply liberally to litter, walls, ceilings, floors, roosts, nests, and adjacent areas. Force spray into cracks and crevices. 0 days. Apply thoroughly to litter, walls, roosts, cracks, crevices, and interiors. 0 days. Apply thoroughly to litter, walls, roosts, cracks, and crevices. 7 days. Apply spray to walls, bedding, litter, and roosts. Force spray into cracks and crev- ices. Repeat as needed. Avoid contamination of nests, eggs, feed, and water. 18 Poultry, continued Pest Treatment method Insecticide and formulation Dilution and rate Preslaughter interval, restrictions, comments LICE, CHICKEN MITES, NORTH- ERN FOWL MITES (POUL- TRY HOUSE AND LITTER TREATMENT), com. Dust malathion 4-5% D Rabon 3% D or 50% WP (stirofos) Sevin 5% D (carbaryl) 1 lb/50-60 sq ft. 1 lb 3% D or 2.5 oz 50% WP/100 sq ft. 1 lb/40 sq ft. 0 days. Apply liberally to litter, walls, ceilings, roosts, nests, and adjacent areas. 0 days. Treat litter evenly and thoroughly. 7 days. Apply to litter, roosts, and adjacent areas. Do not apply to eggs or nests. Do not treat more than once every 4 weeks. DARKLING BEE- TLES (LESSER MEALWORMS) Cream-colored lar- vae infest decaying organic matter or moldy feeds. They are ingested and survive long enough to bite and damage the ali- mentary canal. Spray Rabon 50% WP (stirofos) Sevin 80% SP or 40% or 43.4% suspensions (carbaryl) 2 lb/25 gal water. Use 1-2 gal/1,000 sq ft. 62.5 lb 80% SP or 50 qt 40% or 43.4% suspensions/ 100 gal water. Use 2 gal/ 1,000 sq ft. 0 days. Apply evenly and thoroughly to litter, walls, center posts, and foundation walls. 7 days. Apply evenly and thoroughly to litter or floor surface. Do not apply directly to poultry, nests, or eggs. Repeat as needed. Dust Sevin 5% D (carbaryl) 1 lb/40 sq ft. 7 days. Do not apply to eggs or nest litter. Do not treat more than once every 4 weeks. BED BUGS Spray Flat, reddish brown, blood-suck- ing insects that feed at night. Rarely seen on Dust birds during day- light. Sevin 50% WP 80% SP or 40% or 43.4% suspensions (carbaryl) 8 lb 50% WP, 5 lb 80% SP, or 4 qt 40% or 43.4% suspensions/ 100 gal water. Use 1-2 gal/l,000sqft. 7 days. Apply thoroughly to walls, litter, and roost surfaces. Force spray into cracks and crevices. Do not apply directly to poultry, nests, or eggs. Repeat as needed. Sevin 5% D (carbaryl) 1 lb/40 sq ft. 7 days. Apply evenly to litter. Do not treat more than once every 4 weeks. Do not apply to eggs or nest. HOUSE FLIES, BLOW FLIES (NHE 16. NHE 88) Flies that develop in chicken manure, waste feed, and carcasses are a general annoyance and can transmit diseases among birds and mam- mals. Fly larvae develop in wet, decaying organic matter. Sanitation reduces the number of flies in a poultry house by eliminating fly breeding areas. Weekly removal of manure during the active fly breeding season depresses fly populations because maggots do not have enough time to develop into adults. Removing manure occasionally or under one row of cages at a time are alternatives to complete weekly removal. Partial or occasional removal promotes the establishment of fly parasites and predators, thus enhancing biological control. However, occasional insecticide treatments may be necessary. Spread manure thinly over fields and do not pile wastes outside the poultry house. Mist blower or fogger Ectiban 5.7% EC (permethrin) Vapona 23.4% EC (dichlorvos) pyrethrin (0.1%) plus synergist Misting: Use 4 fl oz/ 1,000 sq ft. Overhead system: 1 qt/12.5 gal diesel or mineral oil. Use 4 fl oz/ 1,000 cu ft. 1 gal/25 gal water. Use 1 qt/8,000 cu ft. Daily use is necessary when used alone. Apply as directed on container. 0 days. Do not treat manure or litter. Retreat as needed but not more often than once every 2 weeks. 0 days. Nozzles should be directed away from poultry. 0 days. Do not apply directly to poultry. Re- duce air movement. Avoid contamination of feed and water. 0 days. Space spray for quick knockdown. 19 Poultry, continued Pest Treatment method Insecticide and formulation Dilution and rate Preslaughter interval, restrictions, comments HOUSE FLIES, BLOW FLIES, cent. Residual wall spray Bait Fly strip Baytex 45% EC (fenthion) Ectiban 25% WP or 5.7% EC (permethrin); Atroban, Insectrin, Over- time, and Permectrin are additional permethrin formulations with state labels for use as residual wall sprays. Rabon 50% WP (stirofos) Ravap 28.7% EC Poultry Spray and Larvicide (sti- rofos + dichlorvos) Vapona 23.4% EC (dichlorvos) 3 qt/25 gal water. Use 1 gal/500 sq ft. 6 oz 25% WP/11 gal water or 1 qt 5.7% EC/ 12.5 gal water. Use 1 gal/750 sq ft. Direct 4 fl oz 5.7% EC (undiluted)/ 1,000 sq ft with a mist sprayer. 4-8 lb/25 gal water. Use 1 gal/ 500-1,000 sq ft. 1 gal/25 gal water. Use 1 gal/ 500-1,000 sq ft. 1 gal/25 gal water. Use 1 qt/ 1,000 sq ft. 0 days. Do not apply directly to poultry. Avoid contamination of feed and water. 0 days. Do not apply directly to poultry. Avoid contamination of feed and water. Do not treat manure. Retreat as needed, but not more than once every 2 weeks. 0 days. Avoid contamination of feed and water 0 days. Avoid contamination of feed and water. 0 days. Do not apply directly to poultry. Avoid contamination of feed and water. Dipterex 1% Dry (trichlorfon) Golden Malrin 1% Dry Bait (methomyl) Vapona 0.5% Dry (dichlorvos) 4 oz/ 1,000 sq ft. 0.25 lb/ 1.000 sq ft. 0.25 lb/ 1,000 sq ft. 0 days. Place in areas where flies congregate during the day. Do not place in areas where birds can come in contact with bait or where bait can contaminate feed or water. 0 days. Use only on the walkways of caged layer houses. Place in areas where flies con- gregate during the day. Do not place in areas where birds can come in contact with bait or where bait can contaminate feed or water. 0 days. Place in areas where flies congregate during the day. Do not place in areas where birds can come in contact with bait or where bait can contaminate feed or water. Vapona Strips (dichlorvos) Suspend 1 strip/ 1 ,000 cu ft. 0 days. Doors and windows must be closed so that vapors can build up to recommended levels. Do not hang near light bulbs or within reach of animals. Manure drench Use manure drenches to kill fly larvae developing in feces. Do not treat more than once every 7-10 days or apply where animals or birds will contact treated manure. Do not apply treated manure to crops not listed on the insecticide label. Cygon 23.4% EC (dimethoate) Rabon 50% WP or 24% EC (stirofos) Ravap 28.7% EC Poultry Spray and Larvicide (sti- rofos + dichlorvos) Vapona 23.4% EC (dichlorvos) 0.5 pt/5 qt 0 days, water. Apply as a coarse spray. 4 lb 50% WP or 0 days. 1 gal 24% EC/25 gal water. Use 1 gal/ 100 sq ft manure. 1 gal/25 gal water. 0 days. Use 1 gal/ 100 sq ft manure. 1 gal/25 gal water. 0 days. Use 1 gal/ 100 sq ft manure. 20 Horses Pest Treatment method Material and formulation Dilution and rate Preslaughter interval, restrictions, comments MANGE MITES Burrowing in skin causes pain and itching. Most prev- alent in winter. Spray indane 25% WP 0.75 lb/50 gal water. Use 2 qt/animal. 60 days. Repeat in 7-10 days. LICE '/i6 to '/fl inch in length. Biting lice are yellow to red. Sucking lice are brownish to blue- gray. Head and neck, withers, and tailhead develop a scurfy appearance. Rubbing may cre- ate raw areas. Spray Co-Ral 25% WP or 1 1 .6% EC (coumaphos) malathion 57% EC or 25% WP 0.5 lb 25% WP or 0 days. I pt 11.6% EC/25 gal water. Treat animal thoroughly. 6.5-10 fl oz 57% EC 0 days. or 0.75 lb 25% WP/ 5 gal water. Treat animal thoroughly. TICKS Seldom a problem unless horses graze in brushy or wooded areas. Spray Co-Ral 25% WP or 1 1 .6% EC (coumaphos) malathion 57% EC or 25% WP 1 lb 25% WP or 1 qt 11.6% EC/25 gal water. Treat animal thoroughly. 6.5-10 fl oz 57% EC or 0.75 lb 25% WP/ 5 gal water. Treat animal thoroughly. 0 days. Repeat as necessary. 0 days. HORSE BOTS Flies are nearly as large as honey bees. They deposit eggs on the fore- legs, throat, or muzzle area; fly ac- tivity severely an- noys horses. Eggs are ingested: lar- vae (bots) develop within the horse's alimentary canal. Feed additive Anthon 90% Powder (trichlorfon) Horse Wormer (dichlorvos) 5 g/250 lb body weight mixed with feed. Treat from mid-October to mid-December. 19.5 g/300 lb body weight mixed with feed. Give to indi- vidual horse in half its normal grain ration. Nonfood use. Repeat after 3 to 4 months. Withdraw all feed 12-18 hours prior to and 3 hours after treatment. Do not treat colts under 4 months of age, mares in the last month of gestation, or horses to be used for food. Nonfood use. Treat 30 days after killing frost. Withhold water 4-6 hours before and 3 hours after consumption of the medicine. Do not treat sick animals or animals that have received tranquilizing drugs or other worm medicines within 1 week of application. Oral paste Eqvalan 1.87% (ivermectin) Ready to use. Follow directions on prefilled syringe. Nonfood use. Injection Preventive spray Consult with a veterinarian for treatment with carbon disulfide, dichlorvos (Equigard), or piperazine + carbon disulfide (Parvex Plus). malathion 57% EC During fall months, sponge legs, under jaw, and chest of ani- mal with a warm 0.5% malathion solu- tion. 0 days. Eggs will be stimulated to hatch and the larvae will be prevented from burrowing into the animal. Retreat when more eggs ac- cumulate. Do not use bare hands; use specially prepared gloves or rubber gloves. 21 Horses, continued Pest Treatment method Insecticide and formulation Dilution and rate Preslaughter interval, restrictions, comments SCREWWORMS, Spray BLOW FLIES Maggots develop in wounds. Dust Co-Ral 25% WP (coumaphos) 1.3 oz/gal water. Treat wound lightly but thoroughly. 0 days. Co-Ral 25% D (coumaphos) Ready to use. Treat wound lightly but thoroughly. 0 days. HOUSE FLIES, STABLE FLIES House flies (NHE 16) develop in any moist, decaying or- ganic matter They annoy animals and humans and can transmit diseases. Stable flies (NHE 61) resemble house flies but have a bayonetlike pro- boscis that pro- trudes from the front of the head. They are blood feeders that often attack lower por- tions of the front legs. Sanitation is essential to reduce the number of flies around horse barns. Chemical treatments without good sanitation will not control flies. Remove moist straw, manure, hay, and spilled feed once or twice a week from within and around the stable or barn. Residual wall Baytex 45% EC spray (fenthion) Cygon 23.4% EC (dimethoate) Ectiban 25% WP or 5.7% EC (permethrin); Atroban, Insectrin, Over- time, and Permectrin are additional permethrin formulations with state labels for use as residual wall sprays. Rabon 50% WP (stirofos) Ravap 28.7% EC (stirofos + dichlorvos) 3 qt/25 gal water. Use 1 gal/ 1,000 sq ft. 1 gal/25 gal water. Use 1-2 gal/ 1,000 sq ft. 6 oz 25% WP/11 gal water or 1 qt 5.7% EC/ 12.5 gal water. Use 1 gal/750 sq ft. Direct 4 fl oz 5.7% EC (undiluted)/ 1,000 sq ft with mist sprayer. 4-8 lb/25 gal water Use 1 gal/500- 1 ,000 sq ft. 1 gal/25 gal water. Use 1 gal/500- 1 ,000 sq ft. 0 days. Do not apply directly to livestock. Avoid contamination of feed and water. 0 days. Remove all animals before spraying buildings. Do not apply directly to livestock. Avoid contamination of feed and water 0 days. Do not apply directly to livestock. Avoid contamination of feed and water. 0 days. Do not apply directly to livestock. Avoid contamination of feed and water. 0 days. Do not apply directly to livestock. Avoid contamination of feed and water. HORN FLIES (NHE 59) Horn flies are smaller than house flies but are simi- larly marked. They are blood feeders that congregate on the back and shoulders. They move to the belly and the shaded side of the animal on hot days. Spray Dust Co-Ral 25% WP or 1 1 .6% EC (coumaphos) malathion 57% EC or 25% WP Ectrin 10% WDL (fenvalerate) Rabon 1% Spray-n-Wipe (stirofos) 0.5 lb 25% WP 0 days, or 1 pt 11.6% EC/25 gal water. Treat animal thoroughly. 6.5-10 fl oz 57% EC 0 days, or 0.75-1.25 lb 25% WP/5 gal water. Treat animal thoroughly. 4 fl oz/3 gal water. Mist 8 fl oz spray per animal. Direct at face, head, shoulders, and legs. Apply 1-2 fl oz to 0 days, flanks, belly, and back. Do not treat animals intended for slaughter. Co-Ral 1% D (coumaphos) malathion 4% D 2 oz/animal. 4 tbsp/animal. 0 days. Apply to the head, neck, shoulders, back, and tailhead. Repeat as needed. 0 days. Apply evenly along back line. Repeat at 10-14 day intervals. 22 Horses, continued Pest Treatment method Insecticide and formulation Dilution and rate Preslaughter interval, restrictions, comments FACE FLIES, STABLE FLIES, HORSE FLIES, DEER FLIES, BLACK FLIES, MOSQUITOES Spray Ectrin 10% WDL (fenvalerate) pyrethrin (0.1%) plus synergist Rabon 1% Spray-n-Wipe (stirofos) 4 fl oz/3 gal water. Mist 8 fl oz spray per animal. Direct at face, head, shoulders, and legs. 1-2 fl oz/animal. 1-2 fl oz/animal. Do not treat animals intended for slaughter. 0 days. Apply as a mist spray. Do not wet the hide. Repeat as needed. 0 days. Apply to flanks, belly, and back. Gel wipe-on Rabon 2% Gel Wipe-on (stirofos) 1-2 fl oz/animal. 0 days. Apply as directed every 2-3 days if needed. 23 Issued in furtherance of Cooperative Extension work, Acts of May 8 and June 30, 1914, in cooperation with the U.S. Departnnent of Agriculture. WILLIAf^ R. OSCHWALD, Director, Cooperative Extension Service, University of Illinois at Urbana-Champaign. The Illinois Cooperative Extension Service provides equal opportunities in programs and employment. 5M — 12-84 — 60285 — sz UNIVERSITY OF ILLINOIS-URBANA Q.630,7IL6C COOS CIRCULAR URBANA, ILL 898ev. 198S 3 0112 019541074