Being one of the older generation (almost 67) my mother taught me to prewash, and I do wash whatever fabric comes in the door and dry it. If it does not wash and dry well, why go to bother of using it, knowing every wash will cause problems. This goes for clothes or quilts, and some fabric when washed is crappy, today more so than in the past. Also, it is ready to use with a starch and Iron job. DO NOT starch and iron out of dryer as starch can draw bug, and here in Central FL we have LOTS of bugs.