Optimizer insecticide cattle ear tags contain 21% diazinon. Approved for
use on beef and non-lactating dairy cattle. For optimum control of horn
flies, lice, Gulf Coast ticks and spinose ear ticks, and to aid in the
control of face flies, use 2 ear tags per animal. Provides up to 5
months control of horn flies, including pyrethroid-resistant horn flies.
Use the Y-Tex UltraTagger to apply. Ear damage may result if used in
calves less than 3 months of age. 15 grams.