I use a 32oz spray bottle I got from the hardware store – it was really cheap and I expected it to only last the summer, but here we are, several years later and it’s still going strong.
To that bottle, add 1 heaping tablespoon baking soda to the spray bottle.
Add water to the fill line. Put the top on and shake til the baking soda dissolves. Label the bottle.
SPRAY YOUR OVEN WHILE IT IS COOL. Let that sit. Don’t wipe it. Just let it dry. Do that again tomorrow and whenever you happen to remember. The next time you use your oven, you’ll find a lot of ash in the bottom. After the oven cools off, wipe that out with a wet rag or paper towels.
Spray again. Any spots that are really difficult, I scrub with baking soda. Be careful doing the door – it’s better to spray that while it is horizontal and let dry before closing. the baking soda can get into the vents and end up between the panes if you have glass in your oven door.
This has worked for me for several years now – my favorite cousin told me about it. I only recently found the website I think he got this info from.