Recently, I had several major spills and boil-overs in my oven. It was looking like this:
Today before lunch, I sprinkled half a box of baking soda all over the bottom of the oven, then dribbled vinegar over the baking soda. I let it bubble and foam, and let it sit for an hour while Sean and I had lunch.
Came home and used paper towels and a pot scraper (the kind used to clean baking stoneware). For very little effort, here was my result:
It's not perfect, but for fast cleaning and no chemicals, I'm impressed. I only spent 15-20 minutes and got this far. I intend to do a second round on the stubborn spots, but I'm thrilled it will no longer smell like burned food each time I cook.
I have been trying to use less chemicals in our home and think this might be a winner!