I have always used the hs scent away products but whenI was working the hunters extravaganza the guys at the Primo's booth were doing a test with their new stuff, they took two cups and put in some cotton balls then put in some doe pee and sprayed in the cup with their spray and then with the HS spray and when I smelled bothcups Icouldn't smell the doe pee in theirs but I could in the other.I will buy some primo's spray and try it at the house myself, even though I watched them do it, and go from there. If I get the same results at home as they did at the show,I will be using their silver xp.