Thank you Quilting Addict. You have a good point. I have some denim fabric that I've been collecting for a rag quilt. Some of the denim has very small stains (not much bigger than the size of pin mark stains but I know they are there and won't use it for a quilt.) I didn't want to just throw this in the trash and don't want to hoard it. Now I have a good use for it.