I have made several of these Tater bags using the special Warm Tater Batting and have had no problems with them. I like cooking corn on the cob in them and heating up tortillas with them. I have given several as gifts with no problems reported. My sister had made one for my Dad several years ago and she used regular batting not knowing about having to use the tater batting and the bag caught on fire in the microwave. So you have to use the special batting because it contains no chemicals which catch on fire in the micro.