Prozap 5079910 Bovi-Strips for Face Fly Control, 22-CountProzap Bovi Strips Face Flaps are designed for use with the Bovi Rub for effective and economical control of face flies, horn flies, lice and ticks on cattle and other livestock. Simply tie the Bovi Strips to the Bovi Rub for additional insecticide application to the face and sides of cattle and other livestock. Wicking action allows for low stress application of insecticides. 22 Count Reduces stress Aids in reduction of economically harmful external