Dairy cattle-Spinose ear tick

Otobius megnini

Management-chemical control

Ear tags

  • beta-cyfluthrin ear tag (CyLence Ultra)-Apply one tag to each ear of animals older than 3 months when ticks are present. Remove tags at end of season or before slaughter.
  • diazinon ear tag (Patriot; OPtimizer)-Apply one tag to each ear of all animals older than 3 months when ticks are present. Do not use on lactating dairy cattle. Remove tags at end of fly season or before slaughter.
  • diazinon/chlorpyrifos ear tag (Warrior)-Apply one tag to each ear of all animals older than 3 months when pests appear. Do not use on lactating dairy cattle. Remove tags at end of season or before slaughter.
  • diazinon/coumaphos ear tag (Corathon)-Apply one tag to each ear on all mature animals when flies appear. One ear tag per calf. Do not use on lactating dairy cattle. Remove tags at end of fly season or before slaughter.
  • permethrin ear tag (GardStar Plus)-Apply one tag to each ear of animals when pests appear. Remove tags at end of fly season or before slaughter.
  • zeta-cypermethrin ear tag (PYthon)-Apply one tag to each ear of all animals over 3 months of age when ticks appear. Remove tags at end of season or before slaughter.
  • zetacypermethrin/abamectin ear tag (Tri-Zap)-Apply one tag per ear of all animals. Remove at end of season or before slaughter.

Pour-ons, sprays, dusts, backrubbers

  • permethrin backrubber (Durvet 10%; Prozap Insectrin X Fly Spray Concentrate 10%)-Dilute 8 oz in 5 gal oil (0.125%). Keep backrubber charged.
  • permethrin spray (Atroban 11% EC)-Dilute 1 quart per 50 gal water. 1 to 2 oz spray per animal; spot treat back, face, legs, ears.
  • permethrin spray (Durvet 10%; Prozap Insectrin X Fly Spray Concentrate)-Dilute 0.64 oz (normal infestation) or 1.28 oz (severe infestation) per gallon water (0.05%, 0.10%). Spray to thoroughly cover entire animal. Spray lactating cows only after milking is completed.
  • zeta-cypermethrin dust (PYthon)-Apply 1/3 oz (1 T) directly to inside of each ear. Repeat as needed but not more often than once every 3 days.