Wash clothes in Scent Killer detergent. Dry with scent-free dryer sheets. They come out of the drier into giant Zip-lock bags. I change completely in the field, and spray down as I add layers. It may be overkill, and it's definitely not fool-proof, but it makes me more comfortable, so that piece of mind is worthwhile. Even after all of that, I still try my best to hunt according to the wind.