Farnam® Roll-On™ Fly Repellent Repel flies from sensitive areas around your horse s face head and around wounds with Roll-On™ Fly Repellent. Easy application with roller-ball for effortless coverage. Also great to use on dogs! Features: Repels and kills house flies stable flies face flies and horn flies from sensitive areas of the face and head of horses and ponies Apply around animal s nose eyes ears mouth and also around wounds and other surface lesions Works hours at a time Botanically-derived pyrethrin formula keeps flies off kills them on contact Never dries out so it lasts and lasts Easy-to-grip plastic 2 oz. roll-on bottle