Horse-Lice

Including

Horse biting louse (Damalinia equi)
Horse sucking louse (Haematopinus asini)

Pest description and damage There are two types of lice in the Pacific Northwest important to the horse; the biting louse and the blood sucking louse. The blood sucking lice are more injurious because heavy infections mean a large loss of blood that may seriously weaken the animal. Lice occur in largest numbers in the winter months when hair is long. Infections spread from animal to animal in adjacent stalls and around mangers. Sucking lice are usually found on the head, neck, back and inner surface of the thighs. Biting lice may be found anywhere on the body, although they seem to occur in greatest numbers around the withers and the base of the tail. The biting lice feed on the hair and scales from the skin.

• butoxypolypropylene glycol 4.85% + cypermethrin 0.15% + MCK326 (Di-N-Propyl isocinchomeronate) 0.50% + piperonyl butoxide 1.63% + pyrethrins 0.20% (Repel-X Lotion Fly Repellent; Endure Roll-on) - Remove cap and roll on areas being treated. Can be used around superficial wounds. Spot treat where flies gather. Do not allow product to get into the eyes, nose, mouth or sores. Do not use on foals under 12 weeks of age. Not for use on horses or foals intended for slaughter.
• butoxypolypropylene glycol 5.0% + cypermethrin 0.15% + piperonyl butoxide 1.60% + pyrethrins 0.20% (Tri-tec 14 Fly Repellent; Endure Sweat-Resistant Fly Spray) - Shake well before applying. Apply liberally every 5 to 7 days. After continued use, applications can be reduced to every 10 to 14 days as needed. Reapply after animal is washed or it rains. Spray on towel or sponge to apply to face. Do not use more than 11 oz. per animal per treatment. Use in well-ventilated areas. Not for use on horses or foals intended for slaughter.
• butoxypolypropylene glycol 5.00% + MGK 264 (N-octyl bicycloheptene dicarboximide) 2.00% + MGK 326 (Di-N-Propyl isocinchomeronate) 1.00% + permethrin 0.20% + piperonyl butoxide 0.50% + prallethrin-ETOC 0.13% (Mosquito Halt Repellent Spray) - For initial treatment, apply daily for 2-3 days to a clean dry coat. After initial application period, apply 1-2 times per week. Reapply after animal is washed or heavy rain. Avoid getting spray into eyes, mouth or nose. Do not use on foals under 12 weeks of age unless prescribed by a veterinarian. Not for use on horses intended for slaughter.
• butoxypolypropylene glycol 10.0% + permethrin 0.50% + piperonyl butoxide 0.50% (Gordons Horse & Pony Spray) - Apply an undiluted mist or wipe-on to localized spots. Can use diluted 1 part concentrate to 4 parts water to treat the whole body via spray. Treat every 14-21 days. Do not use more than 6.5 fl oz of product per application. Do not wet the skin. Use care when applying to thin haired or light skinned animals. Do not allow contact with eyes, nose, mouth or sores. Do not use on foals under 6 weeks of age. Do not use on horses or foals intended for slaughter or human consumption.
• coumaphos (emulsified)-Spray at 2.5 oz/4 gal. Apply to runoff. Repeat as necessary. Treat thoroughly all wounds and injuries. Do not apply to sick, convalescent, or stressed horses or to colts less than 3 months old. Do not apply with other medications or treatments or in stress situations. Do not allow contact with treated animals until their coats are dry. (RESTRICTED USE PESTICIDE: Acute Oral Hazard. For retail sale to and use only by certified applicators or persons under their direct supervision and only for those uses covered by the certification).
• coumaphos (flowable insecticide)-Spray at 1 quart/200 gal of water and mix thoroughly. Apply for complete wetting to run-off. Do not spray more than six times per year. Do not make applications less than 10 days apart. (RESTRICTED USE PESTICIDE: Acute Oral Hazard. For retail sale to and use only by certified applicators or persons under their direct supervision and only for those uses covered by the certification).
• coumaphos (Co-Ral Fly and Tick Spray)-Apply at 2 quarts/50 gal water or 5 oz/4 gal water. Apply to runoff. Treat thoroughly all wounds and injuries. Do not exceed six treatments per year. Allow at least 10 days between treatments.
• cypermethrin (0.15%) + pyrethrins (0.20%) + piperonyl butoxide (1.63%) + Di-n-propyl isocinchomeronate (0.50%) + butoxypolypropylene glycol (4.85%) (Endure Roll-on and Sweat-resistant fly spray; Repel X)-Apply or wipe the horse's entire body at a rate not to exceed 11 ounces per animal. Use a soft cloth to apply to face. Reapply every 5 to 7 days. As protection builds application can be done every 10 to 14 days. Do not use on horses intended for slaughter. Use only in well ventilated areas. Do not allow adults, children or pets to contact the treated surfaces until spray has dried.
• diflubenzuron (3.0%) + permethrin (5.0%) (Clean-up II Pour-on Insecticide with IGR)-Shake well before use. Apply at a rate of 3 ml/100 lb of body weight with a maximum of 30 ml per animal. Apply to legs, shoulders, neck, back and facial areas. Not for use in misting systems.
• MGK 264 (N-Octyl bicycloheptene dicarboximide) 0.5% + permethrin 0.2% + pyrethrins 0.1% (Durvet Turn Out) - Shake well before use. Spray the back, flanks, legs and face with approximately 2 oz per application. Initial treatment use daily for 2-3 days. After infestation subsides, repeat every 7-14 days. Do not apply to foals under 12 weeks of age. Consult a veterinarian before applying to medicated, debilitated, aged, pregnant or nursing animals.
• MGK 264 (N-Octyl bicycloheptene dicarboximide) 0.62% + piperonyl butoxide 0.46% + pyrethrins 0.20% + S-methoprene 0.27% (Vet-Kem Flea, Tick and Bot Spray). Apply spray directly to horse's coat paying particular attention to the legs, shoulders, flanks, neck and topline. Dampen a cloth with the spray to apply to the horse's face. Avoid the eyes. Repeat every 2 months for continued protection from bot flies. During botfly season, the application can be repeated every 3-5 days. This product is not to be used on horses destined for slaughter.
• permethrin 0.25% (Dust) - Can be used in dust bags or shaker can. For direct application, apply 2 oz of dust per animal over the neck, shoulders, back and legs. Use caution when applying to head.
• permethrin 0.25% (Viper Ready to Use) - Shake well before using. Apply a light mist sufficient enough to wet the surface of the hair (2 oz/animal). Repeat as needed. Avoid getting into eyes. Do not use on humans.
• permethrin 0.50% (Bio-Groom Repel-35; Fly Rid Plus; Revenge Horse & Stable Fly Spray RTU)-Shake well before using. Apply to clean dry hair. Apply 2 oz per animal via spray. Avoid getting into eyes. Repeat every 4 weeks if needed. Consult a veterinarian before using on pregnant, nursing, sick or geriatric animals. Do not use on humans.
• permethrin 10.0% (Gordons Permethrin 10 Livestock & Premise Spray)-Apply at 1.28 oz/1 gal water for severe infestations. Spray to thoroughly cover the entire animal. Do not use on foals under three (3) months of age. Do not ride within 24 hr of application. Apply at 0.64 oz/1 gal water for normal infestations. Spray to thoroughly cover the entire animal. Do not use on foals under three (3) months of age. Do not ride within 24 hr of application.
• permethrin 13.30% (Martin's Permethrin 13.3% Multi-purpose Insecticide)-Dilute 8 oz of concentrate in 66.5 gallons of water. Spray entire animal with approximately 2-4 oz of dilution.
• permethrin 0.10% + piperonyl butoxide 0.50% + prallethrin-ETOC 0.033% (Bronco Equine Fly Spray)-Apply light spray mist. Avoid eyes, nose and mouth. Apply to face with a clean dry cloth. Not for use on horses intended for slaughter. Can also be used as a premise spray.
• permethrin 0.10% + piperonyl butoxide 0.50% + pyrethrins 0.05% (Ready to use Repel-X; Dumor Equine Fly Spray)-Apply light spray mist to clean dry hair coat. Avoid getting in eyes, nose and mouth. Apply to face with a clean dry cloth. Can also be used as a premise spray. Do not use on animals under 12 weeks of age. Do not apply to horses or foals intended for slaughter.
• permethrin 0.15% + piperonyl butoxide 0.750% + pyrethrins 0.075% (Power Fly Spray & Wipe; Pyranha Nulli-Fly)-Apply approximately 1 to 2 oz via spray to clean dry hair coat. Apply to clean cloth to apply to face. Do not use on humans. Do not use on foals under 12 weeks of age. Do not use on horses intended for human consumption.
• permethrin 0.20% + piperonyl butoxide 0.50% + pyrethrins 0.10% (Raze Crawling & Flying Insect Killer)-Shake before using. Spray about 3 seconds on each side of the animal. Can also be used as a premise spray.
• permethrin 0.50% + piperonyl butoxide 2.50% + pyrethrins 0.25% (Pyranha Equine Spray & Wipe)-Use full strength. Either spray or wipe-on. Apply light spray mist to hair coat. Reapply in 10 to 14 days. Reapply after washing or heavy rain. Avoid getting in eyes, nose and mouth. Not for human use. Not for use on horses intended for human consumption.
• permethrin 7.4% + piperonyl butoxide 7.4%-Pour-on 8 to 16 ml to back and face being cautious of eyes. Pour-on to MATURE horses only. Wipe-on 8 to 16 ml using a damped applicators mitt or towel. Wipe-on can be applied to mature horses and foals. Repeat as needed, but not more than once every two weeks.
• permethrin 10.00% + piperonyl butoxide 10.00% (Sector Misting Concentrate; Pyranha Stock Guard Concentrate)-Can be applied to the animal. Can also be used as a premise spray. Dilution rates: Normal infestations - 1 part concentrate to 200 parts water (0.64 fl oz per 1 gallon); Maintenace rates - 1 part concentrate to 400 parts water (0.32 fl oz per gallon). Apply to wet the hair paying particular attention to back, withers, flanks and legs. Repeat treatment every 5-12 days.
• piperonyl butoxide 1.0% + pyrethrins 0.10% (Prozap Aqueous Fly Spray RTU)-Apply at a rate of 2 oz per horse spraying to wet the hair.
• piperonyl butoxide 4.0% + pyrethrins 0.5% (Prozap LD-44Z Fogger; Durvet Dairy Bomb 55Z)-Can be used on the animal along with premises. From approximately 2 feet away from the animal, spray the animal paying attention to withers, shoulders and back. Avoid getting into eyes. Do not use on sick animals.
• piperonyl butoxide 5.0% + pyrethrins 0.5% (Dairy Bomb 55; Fly Zap Aerosol Plus)-Can be used as a premise spray as well. To apply to animal, spray for approximately 3 seconds on each side of the animal concentrating on the back, withers and legs. Do not spray in the eyes. Repeat once per day.
• piperonyl butoxide 25.00% + pyrethrins 5.00% (Riptide Waterbased Pyrethrin ULV)-For direct use on horses, dilute 1 part concentrate with 49 parts water. Mix well and apply light mist to wet the tips of the hair. Repeat 1-2 times daily when needed. Can also be used as a premise spray.
• piperonyl butoxide 30.0% + pyrethrins 3.0% (Vampyre Misting Concentrate)-Dilute: 4.3 fl oz of concentrate to 1 gallon of water (0.10% dilution). Spray about 3 seconds on each side of the horse focusing on the back, withers and forelegs. Spray dilution on a clean cloth to apply to the face. Avoid the eyes. Repeat at necessary. Can also be used as a premise spray (see label for directions).
• zeta-cypermethrin 0.075% dust-Apply up to 2 oz per animal evenly in the hair over the head, ears, neck, shoulders, back and tailhead. Do not apply more often than every 3 days. Never use on dogs or cats.