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.
HOW TO USE:
- Place decals on the outside of the window.
- Concentrate decals at center then work out, placing decals at a minimum, on every 2 feet of glass.
- For maximum protection, scientific studies suggest placing decals 2 inches horizontal, by 4 inches vertical, from one another.
- UV coating will fade based on exposure and local elevation. For best results, replace decals every 4 months
FEATURES:
- 4 decals per envelope.
- 10.2 x 0.1 x 10.2 cm
- Static cling
- Made in the USA