i don't use it because of the price. family and friends swear by it. i've for years and learned from my uncles. Who in my opinion are "real" hunters. I was taught how to use cover sents, the wind and surrounding foliage and "odors". it has worked for me. when i go into the woods i stink like the rear end of dirty animal..lol...This year durring 2nd shoot gun season the I was sitting against a tree with some tall grass around me. I had a doe come within 10 yards of me with the wind blowing 10-15 right at her. imho you don't need to spend the money.... as long as you don't mind the "stink"....