Yes I do. I try not to take any new fabric, for any project I buy, into my sewing room when I get home. It goes into the laundry. I wash and machine dry, then fold. I have a couple packages of those bright round stickers that I got from Wal-Mart, you know the kind you can put prices on for garage sales. I put a round sticker on the front edge of the folded fabric, then put it on my shelves. About half of my stash has not been washed first, so these round neon stickers tell me instantly whether it has been washed or not. If I want to use a non-washed fabric, well, it is just washed first. I hate to have anyone, friend or customer, have bleeding or shrinking of anything I make.