How do I clean the oven without using those awful cleaners?

I think this project is the one you are searching:

https://www.hometalk.com/diy/clean/ovens/the-best-technique-on-how-to-clean-an-oven-41468372

Here are more ways.

https://www.hometalk.com/search/posts?filter=clean%20oven

Hi Mary. I would like to share a great resource with you. If you are ever looking for an old Home Talk project, just click on the little blue house at the top of this page, left-hand corner. Also, check out "Explore Projects" for even more. Best wishes.

I use a paste of baking soda and salt. The key is to wipe up spills as soon as you safely can.