Durvet FlyRID Roll-On is a natural insect repellant made with essential oils to help repel ticks, biting flies, mosquitoes, and gnats. It features a roller ball applicator for easy, mess-free, and targeted application. The formula creates a protective barrier against flies and biting insects while offering a pleasant, natural scent that is agreeable for both horses and handlers. Made in the U.S.A., it provides a safe and effective solution for outdoor protection.