I wash my base layers everytime to every other time depending on the outdoor temperature. I don't wash my outer layers a whole lot, and the reason I don't is cause they never see anything except the inside of a bin and the good ole outdoors.I get to my hunting place, park and turn the vehicle off, take the bin out of the vehicle and change. Upon returning I get bin out and change again. Mobowhuntr, I agree with you, it is much better to smell like nothing... or dirt, cause that's everywhere. Cover scents don't work where i live too many places i hunt where the scents change andI don't want to carry one to the other.