Includes
Cattle chewing louse (Bovicola bovis)-biting
Little blue louse (Solenopotes capillatus)-sucking
Long-nose louse (Linognathus vituli)-sucking
Short-nose louse (Haematopinus eurysternus)-sucking
Management-chemical control
A single treatment may not give complete seasonal control because none of the listed products are effective against eggs. A second treatment no later than 14 days after the first treatment is usually recommended.
Ear tags, strips
- zeta-cypermethrin/abamectin/piperonyl butoxide ear tag (Tri-Zap)-Apply one tag per ear of all animals. Remove at end of season or before slaughter.
- zeta-cypermethrin/piperonyl butoxide ear tag (PYthon; PYthon II; PYthon MagnuM)-Apply one tag to calves, two tags to mature animals in late fall or early winter. Remove at end of season or before slaughter.
- zeta-cypermethrin/piperonyl butoxide strip (PYthon)-Apply one strip to existing ear tag(s) on all animals at least 3 months old in late fall. Remove strip before slaughter. Do not use concurrently with insecticide dusts containing zeta-cypermethrin or cypermethrin.
Pour-ons, sprays
- coumaphos spray (Co-Ral Fly & Tick Spray)-Mix 1 quart per 50 gal water. Spray to complete wetting to run-off. Treat no more than 6 times/year. Do not apply less than 10 days apart.
- cyfluthrin pour-on (CyLence)-See label for dosing instructions. Pour along top of back and head of cattle of all ages. Repeat treatment 3 weeks later.
- dichlorvos/piperonyl butoxide/pyrethrins (Super II Dairy & Farm Spray)-Spray with 2 oz of product. Immediately rub spray into the hair (not with bare hand).
- diflubenzuron/permethrin pour-on (Clean-Up II; Lice-Ban)-Apply at 3 ml per 100 lb of body weight up to 30 ml per animal. Retreat as needed, but no more than once every 2 weeks.
- eprinomectin pour-on (Eprinex) -Apply at 1 ml/10 kg (22 lb) body weight. Apply along midline of back.
- octanoic acid/nonanoic acid/decanoic acid (Ecovet Fly Repellent)-Apply to hair coat with small sprayer or a cloth.
- permethrin spray, ready-to-use (various manufacturers; 0.25%-1%)-Apply to animal as directed. It may be helpful to apply specifically to infested areas using a stiff brush to get spray to base of hair. Repeat every three weeks or as directed, if required.
- permethrin spray, concentrate (various manufacturers; 10%-40%)-Dilute in water as directed. Apply to animal as directed. It may be helpful to apply specifically to infested areas using a stiff brush to get spray to base of hair. Repeat every three weeks or as directed, if required.
- permethrin pour-on (various manufacturers; 1%-10%)-Apply to animal as directed. Typical application interval is 14 days, as needed, but follow label.
- permethrin/piperonyl butoxide spray, ready-to-use (various manufacturers; 1%)-Apply to animal as directed. Typical application interval is 14 days, as needed, but follow label.
- permethrin/piperonyl butoxide spray, concentrate (various manufacturers; 10%)-Dilute in water as directed. Spray animal as directed. Typical application interval is 14 days, as needed, but follow label.
- permethrin/piperonyl butoxide pour-on (various manufacturers; 0.125%-10%)-Apply to animal as directed. Typical application interval is 14 days, as needed, but follow label.
- pyrethrins spray (PyGanic Livestock & Poultry Insecticide; PyGanic Specialty)-Dilute as directed. Spray to thoroughly wet hair. Repeat treatment in 10 days. This organic product is OMRI listed.
- pyrethrins spray (Evergreen Pyrethrum Concentrate)-Dilute at 1 quart with 60 gal (1.5 oz with 2 gal) water. Spray to wet hair thoroughly. Repeat treatment in 10 days. This organic product is OMRI listed.
- pyrethrins spray (Lynx 1.4%, 5%; Tersus 5%)-Dilute in water as directed. Apply to wet hair thoroughly. Repeat treatment in 10 days.
- pyrethrins/piperonyl butoxide spray, ready-to-use (various manufacturers; 0.1%-0.5%)-Apply to animal as directed. Typically, treat every 10-14 days as necessary but follow label for treatment interval.
- pyrethrins/piperonyl butoxide spray, concentrate (various manufacturers; 0.96%-6%)-Dilute in water or oil as directed. Spray animal as directed. Typically, treat every 10-14 days as necessary but follow label for treatment interval.
- rosemary oil/geraniol/peppermint oil spray (Essentria IC-3)-Mix 1 to 3 oz per gal mineral oil. Spray directly on animal in amounts to sufficiently cover. Apply the spray at least 20 minutes prior to milking or after milking has been completed.
- rosemary oil/peppermint oil spray (Essentria All Purpose)-Mix 1 to 3 oz per gal water or mineral oil. Spray directly on animal in amounts to sufficiently cover. Apply the spray at least 20 minutes prior to milking or after milking has been completed.
- tetrachlorvinphos/dichlorvos spray (Ravap EC)-Mix 1 gal in 200 gal water or 2 oz in 3 gal. Spray with up to 0.5 gal per animal. Do not treat calves under 6 months of age. Take care to not get spray on teats and wash teats if treatment comes in contact. Do not treat more than once per day.
Backrubbers (oil)
- permethrin (various manufacturers; 1%-40%)-Use undiluted or dilute in oil as directed. Recharge as needed.
- permethrin/piperonyl butoxide (various manufacturers; 0.125%-10%)-Use undiluted or dilute in oil as directed. Recharge as needed.
Dusts
- coumaphos dust (Co-Ral 1%)-Place bags so they hang 4 to 6 inches below animals' backline. Direct applications of 2 oz per animal may be repeated no more frequently than 10 days apart and no more than 12 applications in 12 months.
- permethrin dust (several brands, 0.25%)-Place bags so they hang 4 to 6 inches below animals' backline. Direct applications of 2 oz per animal may be repeated as needed but no more than once every three days.
- zeta-cypermethrin/piperonyl butoxide dust (PYthon Dust; PYthon II Dust)-Apply in dust bag, shaker, dusting glove, or mechanical duster, hung where cattle congregate or pass through. Direct applications of 2 oz per animal may be repeated as needed but not more than once every 3 days. Do not use concurrently with insecticide ear tags containing zeta-cypermethrin or cypermethrin.