WIPED OUT our bug problem. Installed it (in a temporary location), put a white towel under it the first night, saw a decent amount of dead bugs. Moved it to it's permanent home and forgot all about it. All of a sudden a few weeks later, I got a bite. Then it occurred to me that was the first bite in a long time. Used to coat myself in Deep Woods Off to go to outside (which I really hate the idea of DEET on my body, but at that time, it worked the best) sometimes if I forgot the deet I would get covered in very itchy bites. Even with the DEET I got bit, a little less, but in really inconvenient and sensitive locations :) No seeums not just bite but swarm around your face. This sounds idiotic, but at first it didn't occur to me that is was the Flowtron. It was like Zounds, the bugs are gone, that's great. Oh yeah, my husband did put that Flowtron thing up. We were certainly skeptical, but I can tell you it worked like magic for us. One bite in 4 weeks? I used to get 6 or 7 a day at least. And swarms of bugs in my face. They are all gone