Used it for the First time back in 2000 when i still shot wheels, had 9 deer come through on me that morning on state land, all were lip curling like crazy and bobbing there heads, ended up killing two big does that morning, 4 weeks later on a night sit half mile down that road i used it on my boots to walk to my stand, 20 mins before close i had the biggest buck i ever got to release an arrow at, came in nose to the ground, on the scent trail like he was following a doe. Well i killed that buck at 20 yards, now he hangs on my wall. It does work, don't know why i stopped using it. Guess like all thing unnatural in the deer woods, if you use it to much , deer will start taking caution to it.