Patriot Pack Shot Patriot Insecticide Ear Tags are for effective control of buffalo fly, including control of pyrethroid resistant fly populations on beef and dairy cattle. Patriot is impregnated with Diazinon, an anticholinesterase insecticide of the organophosphate chemical class. The insecticide is slowly released from the tag to protect cattle against buffalo fly for up to 4 months. With the added convenience of a one ear tag system, Patriot is easier to apply and economical.