So I bought this bug zapper at Lowe's and hung it up on a large tree. I set the zapper to to come on during the night-time hours, which is a nice feature. It took me a few days to figure out it didn't even come on! I played around with it for awhile and determined it did not work at all. I took it back and got another one. The 2nd one turned on but would not stop sparking. According to the directions, the metal cage was too close to each other. I messed around with it for awhile and then took it back because it would not stop sparking. The 3rd one seems to work fine!Bottom line, if you find one that works, it seems to work very well! Keep your receipt though.