Stop those pesky flies from annoying your horses with Farnam Swat Horse Fly Repellent. This supplement repels house flies, stable flies, face flies and horn flies from sensitive areas of your horse’s face and head, as well as from areas around wounds. Wounds are especially necessary to protect as flies can be dirty and carry disease to your pet. Effective on horses, ponies and dogs, this supplement is ideal for use on sensitive, hard-to-reach areas. For the most effective control against flies, apply daily. This supplement lasts hours for relief your horse is sure to appreciate.