Convenient application, Pet Shield Gel Balm Ointment where fleas, ticks and mites fester the most. Used in areas such as the face or forehead between the eyes and around the ears or body areas and tail or where they are most prominent. Easy to use packet. Just open packet and apply on areas needed, rub into pets hair and skin. Stays active up to 5 to 7 days. 1.0 Ounce Packet.