Combines botanically-derived pyrethrins with cypermethrin to form a fast-acting, long-lasting fly control formula that repels and kills flies and other insects for up to 10-14 days Contains a sunscreen which protects against both forms of the sun's harmful, ultra violet rays Water-based formula won't irritate even sensitive-skinned horses Protects horses against horse, house, stable, face, horn and deer flies as well as gnats, mosquitoes, lice and deer ticks Spray or wipe on Available in 32 oz. with trigger sprayer or gallon size.