I only wash my scent lok suit about 3 times a season. Depending on the weather, if it has been hot I will wash it more. I do run it in a heat cycle for 40 minutes and put it in a huge zip-lok bag with all my other hunting clothes. I do think this stuff works I have had deer close enough to hear them fart. I do believe alot of it has to do with camo pattern. But that is another topic. Buy and if you don't like it sell it on ebay.