i have so many scraps of batting that i use it up making rag quilts. i can't stand to throw it away. i have even been known to mix different types and haven't noticed anything bad happening. of course my rag quilts are the ones that get the most use and i do mean use. they are used inside and out and i usually have one in the car in the winter just in case. there are no quilt police here so have fun and experiment.