I can't deny any scientific data presented by anyone, because simply put...I don't know any of it. But I'll put it to you this way....I have used the same Scent Blocker suit for atleast two years now(the pores have to be full by now) and granted I try not to make it a point to do so, but.....When a guy just has to fart...he has to fart!!! I can fart with my Scentlok on and I don't smell a thing. Granted my sniffer isn't as good as a deer's or coyote's, but I think that accounts for something. They may be a gimmick, but I will continue to use them as much as I can. I still shower up and wash all my clothes in descenting soap, but for me it's just another piece of my hunting attire. How do you like that scientific study??