I made a rag quilt w/flannel fabric and didn't pre-wash like the pattern said to do and I had some red and was afraid and got the Shout cloths and the cloths were all red and also some of the red ran onto the other fabric and some fabrics faded. I'm thinking it would be best to take the time to pre-wash I think after reading here I will pre-wash I didn't use that Retayne maybe it's better. I think I'll still use the cloths even if I pre-wash. I don't want to ruin something it's a lot of time & work not to mention money to have ruined. Thanks girls. Sue