WindowAlert Decorative Hummingbird Decals

WindowAlert decals help prevent both pet and wild birds from accidentally striking windows. Each decal has a special coating that reflects ultraviolet light. This ultraviolet 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. The decals are designed to be placed on the outside of a window. As a rough guide, we recommend one decal for every 3' x 3' section of glass.

4 static cling decals per package. Requires exposure to either natural light or normal incandescent bulbs during the daytime.