TRI-ZAP Insecticide Cattle Ear Tag - 20ctTrizap Cattle Insecticide Tags 20ct TRI ZAP is a sustained release, plastic ear tag containing a synergized formulation of Zetacypermethrin, a potent, enriched S isomer pyrethroid compound and Abamectin, a highly active macrocyclic lactone that has never before been used in combination on cattle. TRI ZAP is for use on Beef and Dairy Cattle (including Lactating) and Calves to control Horn Flies, Face Flies, Lice and Spinose Ear Ticks. No withdrawal