Great product
I bought this one to replace another one I got that I think actually attracted them, and I barely have it turned on inside my portable garage and I have not seen any evidence of bird crap in there since I put it in there and I barely got it turned up. I see birds out flying outside, but not in my building crapping on my truck. And that thing actually gets pretty loud, I made the mistake of buying external speakers and almost blew my eardrums out in the house when I tested it. 😁