It doesn't! Maybe when it is brand new! I read through a court case on time, some guy sued Scent lok, claiming that the product does not do what they claim. He won, and I know of more then one case.. Basically what I remeber was that the clothing once it looses it's carbon "Charge" it must be reactivated. We all know this. However, for it to recharge it has to reach like 1200 degrees or something. No household dryer can pull that off. not to mention the clothing would burn. I think it is all a gimic, The best thing we can do is hunt the wind.. And use cover scent.. If anyone disagree's, that's fine.. Stop by and look at my trophy wall!