Here's what I'm dealing with:
This is the inside of our oven door. Yes, that large part that takes up most of the door is the glass. Unfair and overwhelming, but I tried the tip with the promise of a clean oven door in half an hour.
I used about 1/4 cup of baking soda and mixed it with some water to create a paste (more like a frosting). I waited, then wiped it off, but it wasn't as easy as promised, so I had to do some scrubbing, and then Big Spazz had to do some scrubbing with new paste as well as help from our ceramic stove top cleaner.
The top photo is reflecting the cabinets above the stove and the bottom photo shows our pizza oven inside of the oven as well as Big Spazz's thermometer. I can also see the my legs and the red iPad cover in the reflection.
Try it as a first option. Your lungs will thank you.