I've sold hundreds of them and only two reported burning up. I see the flaw that happened...... Instructions say to wrap the WET potato in a DAMP paper towel. It's the moisture that not only helps to steam the potato and bake it nicer, but also cuts down on the fire danger. Oh, the bags that burned, one lady left the safety pin on that held the instruction card and the other had a commercial grade microwave in which the power is too high for the bag to handle. Try again using the wet potato and moist towel. You'll like it. I've used my for years!