If I don't was the cut pieces of fabric, I make sure I do wash the top in cold water on my very gentle cycle with , and I can't think of the name of the product, a wash made to stop bleeding. It works every time for me. I have made a Christmas quilt top without washing any of the fabric but I have it commercially cleaned when needed. I just want the quilt to last my life time and still look good. I have had it cleaned twice and it still looks crisp and new.