Definitely keeps birds away

I put them around my patio 1 ft. apart from each other. At first I only did the front of patio but the birds came though the sides sitting on my 2 ceilings fans and pooping all over my outdoor furniture, but I bought more to put on the side and it did the trick. They were good for about 2 years and slowly the shinny finish wore out and some the skinny little rubber holding them gave out on its own or the wind was too strong for them. I only have two left and I am noticing the birds have returned so I am re-buying, but this time I am going to use fishing line instead of the skinny rubber it comes with.

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