Dairy cattle-Lice

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

  • zetacypermethrin/abamectin/piperonyl butoxide ear tag (Tri-Zap)-Apply one tag per ear of all animals. Remove at end of season or before slaughter.
  • zetacypermethrin/piperonyl butoxide ear tag (PYthon; PYthon MagnuM)-Apply one tag per head over 3 months of age (PYthon MagnuM) or two tags per adult (PYthon) in late fall or early winter. Remove at end of season or before slaughter.

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; 1%-10%)-Apply to animal as directed. Typical application interval is 14 days, as needed, but follow label.
  • pyrethrins spray (PyGanic Livestock & Poultry Insecticide)-Dilute at 1 quart per 16 gal water. Spray to thoroughly wet hair. Repeat treatment in 10 days. This organic product is OMRI listed.
  • pyrethrins spray (Evergreen Pro 60-6)-Dilute at 1 quart with 75 gal (1 oz with 2 gal) water. Spray to wet hair thoroughly. Repeat treatment in 10 days.
  • 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.
  • pyrethrin/permethrin/piperonyl butoxide spray (Raze; Gordon's; Flys-X) -Apply to infested areas using a stiff brush to get spray to base of hair. Repeat every 2-3 weeks as required.
  • rosemary oil/geraniol/peppermint oil spray (Essentria IC3)-Mix 30 to 90 ml (1 to 3 oz) per gal mineral oil. Spray directly on animal in amounts to sufficiently cover.
  • 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.
  • 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. Do not treat more than once per day.
  • thyme oil/2-phenethyl propionate/rosemary oil spray (EcoVia EC)-Dilute 0.5 to 1.5 oz per gal mineral oil USP. Spray to cover thoroughly. Repeat as necessary.

Backrubbers (oil)

  • permethrin (various manufacturers; 1%-40%)-Use undiluted or dilute in oil as directed. Recharge as needed.
  • permethrin/piperonyl butoxide (various manufacturers; 1%-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.
  • tetrachlorvinphos dust (Prozap Dust'R)-Apply in dust bag, or shaker 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 7 days.
  • zetacypermethrin/piperonyl butoxide dust (PYthon)-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.