Atsko UV Killer ZERO UV Spray - 2 Quart - U-V-Killer ZERO UV blocks ultraviolet reflection and luminescence. For all fabric, camouflage, and blaze orange. One bottle will treat two sets of hunting clothes. U-V-Killer ZERO UV has changed how hunters think about camouflage. It has been proven that animals and birds have sensitivity to ultraviolet light and the 438nm short-blue wavelengths that humans are blind to. U-V-Killer ZERO UV absorbs U-V wavelengths and thereby eliminates the blue glow caused by fabric dyes and detergents that contain U-V brighteners. U-V Killer ZERO UV eliminates the brighteners from your camouflage making your camouflage almost invisible to the keen eyes of deer and other game. First wash new or soiled garments in ZERO Sport-Wash. Then spray on U-V-Killer ZERO UV. U-V-Killer ZERO UV absorbs the ultraviolet light and literally kills the blue-white glow which animals and birds so easily see on untreated garments. For a better chance at all wild game, treat your camouflage and blaze orange with U-V-Killer ZERO UV. It should be noted that a single washing in commercial detergents or fabric softeners will (while not removing the treatment) render the U-V-Killer ZERO UV useless by depositing new brightener dyes. Always wash treated clothes in ZERO Sport-Wash. U-V-Killer ZERO UV blocks ultraviolet reflection and luminescence. For all fabric, camouflage, and blaze orange. One bottle will treat two sets of hunting clothes. U-V-Killer ZERO UV has changed how hunters think about camouflage.