Bumping up, with a question: I have a temporary tenant who broils food in my toaster oven every day, as close to the heating elements as he can get his food, and never wipes out the inside. I didn't realize how bad it was (it's been about 6 weeks) until I went to wipe off the door and had to scrub for several minutes to get it clean. We discussed this a few minutes ago when he came upstairs and found me scrubbing out the toaster oven with a steel wool pad (a plain one, not the kind with soap in them), the only non-chemical item I've found that will touch the grunge inside the toaster oven - and even it's not taking off anything. I've gotten a lot of it off, but some of it is so baked on that just scrubbing won't touch it - and I'm not sure about using baking soda and vinegar in the toaster oven, for fear it will get inside the works. Does anyone have any other suggestions?