Because animals cannot fend off flies like humans do, they need all the help they can get. SHOO-FLY ® Ointment FOR DOGS ONLYA fly repellent in an ointment base formulated against biting flies. It also contains a sunscreento protect delicate skin and ear-tips from damage by the sun. The ointment is in the form of a cosmetic base, which is easy to apply, and does not leave a tacky residue on the ears. Available in a 50g tube.