Sounds like you may be on to something. Never used myself when setting my snares. Have always just boiled all my snares/traps to rid of scent, then rubber gloved everything while setting. May have to try. Are you buying or making the scent killer?.There is a great recipe for making it yourself that DOES work. I' ve been using it bowhunting and have never been winded when had it on. The recipe is: 2 qts hydrogen peroxide,2 qts " distilled" water, 2 boxes baking soda. Mix all together,stir alot, let sit for 2 days stiring every so often. You' ll find that some of the soda will settle, but not to worry about it.Bottle it(gallon milk jug) and let sit 1 week before using. This is EXTREMELY cheap to make(bout $4/gallon) compared to buying it for $5 for a few ounces. It REALLY works also.Steve