Window Alert UV Liquid

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UV Liquid by WindowAlert prevents window strikes, makes it easy for birds to see your windows.Convenient to use on entire window areas, the bingo-type marker dries almost clear. Re flects ultraviolet sunlight to alert birds of glass. Barely visible to humans, birds see the marks as a brilliant glow–warning them to stop!Dab or draw on the outside of window in circles, dots, squiggles or lines... even get fancy if you like! For best results use with a few Window Alert Decals.Window Alert products have received rave reviews and work beautifully to prevent birds from crashing into windows.1.69 oz.5 x 1.25 Show more