I knew mine worked but after this opening weekend of deer season I will swear by them. Opening morning didn't have any more butane for mine so I left it at home. Hunted next to a slough and the mosquitoes were the worst I have ever seen. My rubber boots were completely covered in them just sitting and waiting for an opening on my hands or face. Needless to say I saw very few deer as I spent all my time swatting the Dam* things. Sunday I had refills and took thermacell to woods. Not one time did I have to swat a mosquito only had one buzz me once but it quickly got out of there. Once out of the stand I turned it off thinking as I walked they wouldn't bother me, well after it cooled a few minutes they were attacking like no tomorrow. Scent I can't attest to although I have seen plenty of deer while using it. Today I look like I have chicken pox on my hands neck and forehead. Will never run out of butane again. Please no West Nile!