Was working on something one day that had foam insulation. I wanted to clean the devise, so I grabbed a can of Brake Cleaner and sprayed it on the crud. Worked great on the crud, but to my horror, it Melted the Foam. However, it turns the foam into a sticky, gooey, mess. The goo does scrape off easy tho. If I was going to take a flame to finish cleaning the foam off my Fridge, it might make the burn easier. My thought is, the flame would have to melt the foam,{if you didn't spray it with brake cleaner], before it would burn off, which would run down. The Goo does dry when the brake cleaner evaporates, which I think would burn easier. Just DON'T TRY THIS IN YOUR GARAGE. MY DISCLAIMER, I have not tried this and I don't have anything to try it on. SOOOOOO, if you decide to try it, do maybe say, a small door, first. Maybe I need to change my location first. lol IF You Try it, Lets Us Know How it Works. If its a nightmare, SORRY. I just haven't read yet where anyone has tried this AND if I find something to try it on I will let YA'LL KNOW. What is your thought DaveOmak? You seem to be a very knowledgeable man, when it comes to building Smokers.