there has been manystudiesdone on this subject, picture scent-loc clothing like a sponge. a spongecan only soak up so much water before it is full and cannot soak up any more. well the carbon does soak up scent and starts doing so the minute it is made. then it sits and sits soaking up scents until a hunter walks into a store and buys the item,by the time the hunter has purchased the item, it is likethat sponge that is full and cannot soak up any more. they have everyone fooled into thinking that the heat from a household dryer re-activates the carbon. it takes MUCH MORE heat than a dryer can produce to re-activate carbon. just like JagMagMan said...BIGGEST SCAM to seperate hunters from their money!!