I was told by a Quilt appriser to wash in cold gential cycle, for about 5 min. squeeze out water DO NOT spin, or wring, rinse the same way, do again if spots are still there, lay flat to dry use a product called quilt wash (only use 1/2 percribed amount) you can get at most LQS, my quilt is a circa 1940 hand pieced and quilted.