Its the best investment ive made. Ive been using mine for several yrs. The replacement cartridges are a little pricey but well worth not having mosquitos carry you off. It does put off a slight odor and smoke but Ive used in it ground blinds, tree stands, box stands and other stand you can just about imagine. Horizontal or Vertical it still worked perfectly fine. I have had in my pocket b4 as well but I wouldn't recommend this it does get hot. Ive also had deer come in as close as 20 yds and have never been busted.