my 10 year old decided to heat up a piece of pizza for a minute in foil in our built in microwave while i was downstairs working out. there is a small pinhole in the mesh of the door but not all the way through and a small black mark on the back of the oven. i of course can't get a hold of DH at work so I was wondering if it can be used? I'm afraid to put anything in and cause a fire. TIA!!!



