Recently I had tremendous success cleaning one extremely dirty oven, with my bare hands, using the Norwex Oven and Grill Cleaner. There were no nasty fumes or caustic chemicals. The enzymes in the Cleaner simply dissolved the burned-on gunk.
To start, I warmed up the oven slightly and turned it off. I sprayed on the Oven Cleaner, let it set for 5 minutes, and then wiped it clean with my Spirisponge and Enviro Cloth. I never had to scrub. On the particularly caked-on areas I repeated the procedure. That's all there was to it!
I took pictures as I went along. Seeing is believing, right? You can see what it looked like to start (yuck!) and when I was finished. You'll notice the window is so clean you can see right through it to the floor beneath.
Is this cool or what?