I never prewash fabrics so I always have to wash my quilts before gifting them. For a single queen sized quilt I use the giant 6 load front washer at the laundry mat, warm water with a couple of color catchers. When it's done I look it over for bleeds and check out the color catchers. I usually only need to wash once unless it's batiks then it often takes a second time. I dry in the giant family size dryer 20-30 minutes on low usually does it. I'll put 2 twins and up to 3 couch or baby quilts per washer. Has not failed me yet.