Anyone out there use one? Friend of mine got one a few years ago. He used it from the blind and the stand. He says that he never really could distinguish a difference. I tried it once on a morning archery hunt and still got busted by does. Super quiet morning and I could hear the fan running on it. Not sure if that's the reason, they were 5yds from me and wouldn't step out in the plot for a shot. I'm not super "A" retentive about scent control and I kill plenty every year. Just wondering if I missing out on something.