Cattle Insecticide Ear Tag Recommendations
Lee Townsend, extension entomologist, University of Kentucky
Southern Livestock Standard
Insecticide impregnated cattle ear tags have been a popular means of pasture fly (horn fly and face fly) control for over 20 years. The insecticide in them is transferred to the animal’s hair coat as it grooms and rubs. Insecticide protection lasts for 12 to 16 weeks and the fly control program travels with the animal as it goes from pasture to pasture.