Butterfly Decals- 4 Decal Pack
Millions of wild birds are killed each year flying into windows. Now you can save the lives of the beautiful birds you love.
WindowAlert is a window decal that may be applied to home and office windows. The decals contain a component which brilliantly reflects ultraviolet sunlight. This ultraviolet light is invisible to humans, but glows like a stoplight for birds. Birds have vision that is up to 12 times better than that of humans. WindowAlert decals help birds see windows and avoid striking the glass.
To the human eye, the decals appear as frosted or etched glass.
Butterfly decals measure approximately 4" across. The two decals measure 2" across. WindowAlert 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. Reapply decals every 6-9 months.