I have one and have used it many times. Used it up in Canada bear hunting.. Didn't get a bear.. Used it in IL deer hunting, got a deer.. Did it make a difference, who knows.. But it did keep me from being eaten alive.. I don't use it all that much but if I hunt deer early near a pond or where there are a ton of skeeters then I will..

OH, and I'm not sure if anyone has mentioned it yet or not but they have started making a "holder" for them now... It straps in and you can strap it to ya.. I bought one last week, have not used it yet though..