WindowAlert Butterfly Anti-Collision Decal - UV-Reflective Window Decal to Protect Wild Birds from Glass Collisions - Made in The USA

So - These decals work great. But the butterfly/moth shape is problematic.Every morning for the last two weeks a robin has sat in the bushes outside our window and attacked these stickers. FOR HOURS. Every thirty seconds I hear a "scuttle scuttle bonk" as it tries to grab at each of the butterflies in turn. I'm sure it thinks it's snagging a large tasty butterfly flavored breakfast.Instead of a deterrent and an awareness that this is a solid surface not to fly into, this bird is attracted to the stickers. I wish I was joking. This is the only bird that has done this - but just a heads up to other buyers who might also encounter this scenario.I'm going to have to buy some window decals that look like birds of prey to replace the butterflys. :/

I bought days and another packet with another design as I’ve figured I needed at least eight as I have French doors that the birds were flying into. I have a birdfeeder and birdbath close by so it wasn’t surprising that they would fly into the doors. As you can see I only put them in a specific area on the doors as they never hit very high are very low on the doors. When they did hit the doors it was devastating as a couple ended up dying. I have had the decals now for about a year and am thrilled to say not one bird has flown into the doors since I put them on.

We have sliding glass doors to our deck where we have bird feeders and a bird bath... this fall, birds kept flying into the glass on one of the sliding panels and knocking themselves out. Fortunately, none were killed, but this is a major cause of death to birds! I ordered these stickers and they went on easily, and we have not had another collision since I put them on the window. They are unobtrusive from the inside and don't interfere with our enjoyment of the outdoor view.

I bought these in the winter because of an occasional bird bumping into the window. Unfortunately, according to the package directions, it was a little too cold to adhere them properly (not to mention too cold to clean the windows . . . ).I kept meaning to put them up in the early spring, and unfortunately, a bird flew into our sliding glass door and died before I got them up. We placed them on the windows right after that. It's now fall, and the decals still look good, and we haven't had any more bird deaths so far. I haven't heard a bird bump into the windows either.They look pretty good too. I have them centered on my narrow windows, just above my line of sight, and they don't bother me at all--and sometimes I'm a little OCD. If anything, they're cute. So far I've only needed them on the sunroom windows and the sliding door to the deck.

I had several birds fly into my French door windows each week and bought these stickers to try to prevent the birds from injuring themselves. I added 4 stickers to each window and they helped immediately. They appear light purple from the outside, and clear from the inside. You can see them from inside the house (see picture), but they don't obstruct the view too much and it's definitely worth it to keep the birds safe.

Bought these after a little sparrow flew into our window and died. I put them up the very next day. The ones on the top of the window are very transparent, I cannot see them at all, but the one on the bottom is obvious, however it doesn't bother me because it's just one. So far, no more birds have flown into my window and they have clung well through torrential rains and wind (Hurricane Hanna) and through 100+ degree heat. I recommend them.

This was a great product to prevent the birds from flying into my window. We like to watch the birds so we have a birdfeeder outside our window and too many birds were hitting the window so we found this product and it hasn worked miracles. We haven’t had one bird casualty since placing these on our window. I did learn that your feeders need to be at least 10 feet away from the window. I truly enjoy the look of the butterflies on our window. It’s very subtle but very nice.

After having 3 cardinals and 2 blue jays die flying into my windows I decided to give these a try. While they are not easy to peel off in one piece, after applying they do work.Not one bird accident since I applied as directed.

Having had 2 or 3 bird impacts on our conservatory windows I decided we needed to do something to help the birds out. I thought these looked ideal. Not too obtrusive to us but easily visible to the birds. However they are very visible but luckily are pretty. I'm slightly disappointed but will be keeping them to protect our garden birds.

So far so good. Bought these after several bird strikes on a French door. None since I applied them.

Birds are still hitting windows.

does the job and look pretty

Nowhere does it say that they only last a few months then they are trash. That is nothing but sneaky. I would never buy them again but have learned another Amazon lesson. Make sure we report the shortfalls on these products. Nor will I return them. That is not environmentally sound. I guess I will know when they are expired by the sound of birds hitting my glass. Sad, sad, sad. We had four birds hit our window today.They do not seem to be aware of the stickers at all. I will be asking for a refund.