WINDOWALERT Modern Square Anti-Collision Decal - UV-Reflective Window Decal to Protect Wild Birds from Glass Collisions - Made in The USA

Very easy to apply to outside cleaned glass. They stay in place well and do a great job of preventing song bird window crashes. Arrived on time and well packaged. Plan to continue to purchase as needed every year.

have always used this brand and it always seems to do the job.

I like these decals and they do work. However, they need to be replaced regularly and I think they're overpriced considering what goes into them.

These are used year round, durable, affordable and very effective. Have not had a collision or window strike since we started using this product. I like the variety of designs,also.

These decals do not obstruct my views of the yard and work well protecting wildlife.

So we moved into a house that has massive windows all over the house. Upside, I get a ton of light in my house. Downside, the backyard windows are targets for birds. I live in the country, so the birds aren't going anywhere, and I do like having them in my yard, so I got these to help make things a little more safe for them. Prior to this, I just didn't clean my windows as often as I would like. I also lured them away from the bigger windows with feeders and baths.Finally got my windows scrubbed clean, put these up, and two days later had a strike. In the stickers defense, I missed a spot, put a sticker near where that bird struck and I haven't had one since. Knock on wood, it's been three weeks. Normally, especially in the summer, it's daily to every other day. Not sure how long these last, but I'll buy more when it comes time, these have already proved worth the price.

One of the reasons we bought our current home was because it had large picture windows for viewing the birds we feed. It was so distressing to have bird strikes! I researched a number of different solutions but all of them seemed to involve substantially interfering with our view. When I came across this product I was initially dubious, but the reviews were good, so I gave it a chance. This product has decreased our bird strikes by 90%. Occasionally it will still happen when a cooper’s hawk targets the feeder and they panic-fly in all directions. I first installed these about two years ago and they are still firmly attached, although you might have more issues if you clean windows more often that I do! I subsequently bought a second package in case they need replacement but so far, so good. Follow the directions when attaching. This has been an incredibly cost effective way to increase our enjoyment of our birds.

The main problem I have with these is that they must be adhered to the outside of the window. Where I live there is lots of dust, which sticks to the UV part and decreases their effectiveness. This may be less of a problem if you live somewhere without dust. They are very pretty and I havent found anything that works better so I keep buying them, but they last less than 6 months.

They appear to be helping but they are quite expensive if you have a few big windows.It is recommended to place the stickers quite close together, and if we did that, we would need 10 packs, which would be in the hundreds of dollars!Also, because you need to stick them on the outside, it is quite complicated for the higher windows. Might even need to hire someone!Still debating how many more to order.

These worked well, the supplier does advertise that the UV coating wears off over time and after about 10 months the birds started flying into the windows again.I have bought more, they are easy to install, grip the window well and look good.I hope the manufacturer can work out a way of making the UV coating last longer.

Wish I’d bought more packages of the Squares in the first place. Price about doubled when I wanted to order more. So I bought the humming bird and flower which were at the original price I paid. The Humming Birds do look good on the French doors in my eating area. You can see the image but it’s very pale from the inside of the house and nothing to worry about. I’d rather look at these than have another bird die on my deck. I’m happy to have found them.

I have a house built in the 60s with large windows I wanted to protect the birds without something gaudy. Instead of birds or butterfly shapes these geometric ones are beautiful and don't stand out in any way to distract from the view. I took the larger stickers that were a group of 4 smaller squares and cut them up to make even more stickers and they were more versatile and covered more space. I just bought a second set for new windows I had installed the old ones are still going strong for over a year and a very hard winter with -40c temps and many rainstorms and high wind.

Order the product in early summer of 2019 and it definitely reduced bird strikes on our large picture windows. However rating very low because of price increase. When I purchased in 2019 I paid $9.23 per pack. Now they are $23.92. That price is only for this design (the squares) - all others are the original price.I ended up ordering from the manufacturer in the U.S. and with exchange and shipping paid about the same for 4 packs as I would have for one here.