Away With Geese Solar Land Unit

WindowAlert decals help prevent wild birds from accidentally striking windows. Each decal has a special coating that reflects ultraviolet sunlight. 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 Snowflake decals measure approximately 4″ across, and 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. 

CONTENTS: 4 Decals per Envelope. Each decal is approximately 4 inches across. TYPE: Static cling.