i was at work today, and a co-worker put aluminum into the microwave, and it didnt explode or anything. At first, as soon he put the aluminum container in the microwave, i obviously question him. But he then answered that it was ok because he put something in the bottom of it (in this case, he put a styrofoam plate under the aluminum container). i was a little sceptical at first, but then saw that it didnt explode or anything. Now, does this really work in all microwaves?? im a little scared to try it in my own, heh.