I bought one last week "liberty" I set it up in the backyard according to the instructions and after two days I can walk in the backyard without ANY bites. My wife is always getting swarmed by them and she went out last night after I told her it works and after about 30 minutes of testing...she was bite free. I would recommend them to anyone with a mossie problem. One quick tip...if you live in south Texas like me DO NOT add the attractant to the machine. The most prominant mosquitos in this area are the Asian Tiger Mosquitos and they are actuall repelled by the atractant that comes with the mosquito magnet, which is actually a good thing, just one less thing to buy.