I don't own one and probly never will but I did use a buddy of mine once. I was sitting in a double bull blind on the edge of a 2acre clover plot. The sind was blowing about 5mph straight from me over the food plot. We actually setup like this on purpose that day just to see if the thing worked. I had 10-15 does and a 3.5 year old buck in the food plot all evening with my scent blowing directly towards them. Had some as close a 10 yds. None of them ever acted like they smelt me. So yes I beleive they work,BUT I don't believe they are near as effective in say a treestand where scent isn't kind of contained. I think they are very effective in a semi closed blind. This is just my experince so take it for what you will. Like I said I'll still probly never own one just due to the price.
