I had quilts for Granddaughters with a red backing that was rubbing off on my white sewing machine - yikes!! I did some research and bought Color Catchers - they caught the red colour and it did not transfere to the white, red and green fronts. I have been using them ever since for all quilts. You can safety pin the sheet so that it doesn't get lost or end up on another article in the washer. These sheets are part of my quilting tools since I found them!