title: Release of pyrethroids from insecticidal ear tags.
mesh_terms: D000818:Animals; D002417:Cattle; D003692:Delayed-Action Preparations; D004175:Diptera; D007300:Insect Control / Q000379:methods*; D007306:Insecticides; D009570:Nitriles; D011722:Pyrethrins; D013997:Time Factors
chemical_list: D003692:Delayed-Action Preparations; D007306:Insecticides; D009570:Nitriles; D011722:Pyrethrins; C017690:fenvalerate