I have not used cover scent in well over two decades. Charcoal suits, rubber boots (other than being waterproof for wading), cover scents, all a waste of $ from the hunter's pocket. I have tried them all. Hunt into the wind, and it matters not what you smell like. I have tried many things the 'pros' on the hunting shows were whoring, and I have found that knowledge and skill mean more than a gadget.
Most of my hunting seasons are 5 days long or shorter. I set up camp the day before season and walk around a little. I primitive camp and wear same clothes for a couple days. By the time I kill or give up and break camp, I be getting pretty ripe. I use baby wipes as a quickie bath, but it is far from refreshing. I still see more critters each time as I learn to hunt the conditions, not rely on a gadget that does not work.