Merck Double Barrel Fly Ear Tag (10 pack)

Insecticide ear tags containing 14% pirimiphos methyl and 6.8% lambdacyhalothrin. For control of horn flies and face flies, on beef and non-lactating dairy cattle and calves. Provides quick knockdown and control of both horn flies and face flies. Combines two different active ingredients, an organo-phosphate and a synthetic pyrethroid, to minimize resistance development – eliminates the need for ear tag rotation.