I always wash my rag quilts at the Laundromat when they are finished, and I always use a lint roller to clean up the loose threads and lint. I have been told Laundromat machines have bigger lint traps and can handle the lint better. I take wet paper towels with me and wipe the washing machine to clean out the lint though, because I don't think it is fair to the next user to have to deal with all all that lint in their laundry.