[header] How to clean an oven with baking soda [title] Take out the oven racks. [step] You should also remove anything else that is inside the oven, such as pizza stones or oven thermometers. Check to make sure nothing is left inside of the oven before you begin cleaning. 
[title] Scrape out the loose build-up. [step] You may have a lot of burnt food and build-up in your oven.