WindowAlert UV Butterfly Decal (4-Pack)

WindowAlert Decals help prevent wild birds from accidently striking windows. Each Decal has a special coating that reflects UV light. This UV light is invisible to humans, but birds see it as a brilliant glow - much like a stoplight. To the human eye, the decals appear as frosted or etched glass.

• For best results, the decals should be placed on the outside of a window
• As a rough guide, we recommend one decal for every 3 ft. x 3 ft. section of glass
• Set of 4 static-cling decals
• Butterfly decals measure approximately 4 in. across