OK, I've been watching this thread and thinking, 'do I need to wash my fabric first, or not?' Well, I just went and got some 'Heat & Bond', and it says to wash your fabric first. I want to use it for applique on a doll quilt, so now I've got some of my material that I'm using, plus some other that is handy and similar in color in the washer on a warm water quick wash, with some detergent, and will probably add an extra rinse to make sure it will hold the bonding that I need for this doll quilt. Now I hope the 'Heat & Bond' will work and do what I want it to do. Otherwise, it's back to the drawing board... I plan to wash the other fabrics that are handy, and then go through my stash and wash it all sooner or later, organizing it to color and theme (like Christmas and other holidays, kids fabric, etc.) better as I go. Wish me luck, I'm going to need it!!! :]