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.