I ahve tried a few commersial brands with little or no iondication that they are worth a dime of my $$$. I use pee from deer that I have killed to make a drag wrag and that seems to help cover my scent somewhat. I have had a few decent bucks come in down range winding this scent trail, but not sure why. I also keep the oiley tarsals from bucks I or my buds have killed ... and use these to scent a sapling or two near where I am set-up. This seems to work pretty well as far as causing bucks to come in looking for the "stranger". Or maybe it is their dead buddy they have been missing that they are looking for.