While face flies don’t bite, they are a nuisance and can cause eye irritation. One way to keep flies off of your horse’s or pony's face is to use a fly mask. The Absorbine UltraShield Fly Bonnet has a great fit, is very breathable and easy to put on. The fine mesh means visibility is good, while still protecting your horse’s eyes and ears from biting and disease carrying insects. They are even machine washable. Absorbine UltraShield Fly Bonnets come in several different sizes to fit ponies to draft horses.