Polyurethane insecticidal ear tag and method of use

摘要: A polymeric device and method for the control of insects on animals is disclosed. The in form an ear tag or other shape which can be attached to animal using known techniques. unique polymer/insecticidal formulation provided by combining ectoparasiticidal active compound, such as one more organophosphates, carbamates, pyrethroids organochlorines, with a polyurethane polymer. polymer reaction product 4,4'-diphenylmethane diisocyanate, polytetramethylene glycol 1,4-butanediol. By utilizing particular polymers described, high loadings insecticides are possible resulting shows no tendency exude insecticide during prolonged storage. made according invention provide effective horn flies cattle six months single like where it would take two tags constructed prior art achieve comparable results. result lower costs labor, greater safety workers quantity residual dispose.