If I did not work with unwashed yardage cut into various sized quilt patches because I was concerned with the outcome after washing such as shrinkage, fading, bleeding, etc., why wouldn't I be concerned with the same issues with precuts? I am always amazed that people who always wash and dry yardage as they will in the finished quilt are prone not to wash and dry precuts in a mesh bag, panty hose or in the sink. I can tell you that if you have never experienced a problem in the finished product that you are indeed fortunate. My biggest complaint about precuts and the reason I have stopped purchasing them is that they are so often off-grain and grain does matter even in small cut pieces.