Review on UV-Reflective Leaf Medley Anti-Collision Decal - American-Made Window Alert to Safeguard Wild Birds from Glass Collisions by Barbara Goodwin

On the plus side they appear to be working. Unfortunately, if you remove and replace them more than a few times, they no longer stick to the window. We have several large picture windows and live in an area that is rich in wildlife, including birds. Before putting these stickers on, we had bird strikes at least once a week during the 'high season'. Since we released them about nine months ago, we've only had three. So it's safe to say that they work as intended. They don't block the view from the inside too much, they look a bit transparent, but "mushy". It's worth the little inconvenience. We got used to it quickly and don't notice it at all. Unfortunately, as already mentioned, they do not tolerate being removed and reinserted to clean windows. We have now washed the windows a few times with regular detergents and a mop and the decals are no longer fully adhered to the windows and are much more visible as you can see in the photos. One just falls off. So generally they do what they say and that's important. We can buy a few more and try cleaning the windows without taking them off to see how it works.