I am not a pre-washer. I have a flag quilt made of 6 reds, whites and blues. It had been washed it more than once. Not sure how many times. It doesn't get washed often. It hangs high up on the wall in my entry foyer and has been there about 10 years. When I washed it this time one of the reds ran into only one of the whites. I was really upset. I washed it with OxyClean and it came out.