Protect your pet from annoying visitors with the Flys-Off Fly Repellent Ointment for Dogs and Horses. Because flies can be a big problems for dogs, especially in kennels or runs, this ointment works to keep flies away from open wounds, sores and other sensitive areas. It’s also great for the equine pals, working to repel those annoying flies in the stable too. This is great for healing, as it prevents your animal from constantly swatting away flies and allowing them to leave the wound or sore alone.