How to Deep Clean Your Oven

Oven cleaning sits in that frustrating middle ground—not hard, but tedious and easy to put off until the charred mess becomes genuinely unpleasant. The reality is that a deep clean doesn't require commercial oven cleaner or hours of scrubbing if you work with the right approach and timing. Baking soda does the heavy lifting, vinegar handles the rinse, and patience does most of the work while you're sleeping or running errands. A truly clean oven heats more evenly, cooks food faster, and stops producing that burnt smell every time you preheat. This is also the moment to address any loose racks or broken elements before they become real problems.

1. Submerge Racks to Soak. Pull the oven racks out and lay them flat in your bathtub or on a large plastic tarp in the driveway. Fill the tub with hot water and add a cup of baking soda, stirring to dissolve. Let the racks soak while you work on the oven interior. If your tub is too small, use a large plastic storage container or even a kids' wading pool. The goal is complete submersion.
2. Clear Loose Debris First. Open the oven and use a stiff plastic scraper or old credit card to sweep out loose crumbs, ash, and flaked-off carbon. Work from the back toward the door. You don't need to get everything—the baking soda paste will handle what remains. This step just clears the obvious mess so the paste makes better contact.
3. Mix the Cleaning Paste. Pour half a cup of baking soda into a small bowl and add water one tablespoon at a time, stirring until you reach a consistency like peanut butter. It should be thick enough to cling to vertical surfaces but thin enough to spread. If it's too dry, add water. If it's too runny, add more baking soda. You'll likely need about a quarter cup of water total.
4. Coat All Interior Surfaces. Use an old toothbrush, a disposable brush, or just your gloved hand to spread the paste across the oven interior. Cover the sides, top, bottom, and back wall. Avoid direct contact with heating elements, but you can work around them. The paste should coat everything that's visibly soiled. Leave the racks alone—they're soaking separately. This is messy work, so wear rubber gloves and old clothes.
5. Let Chemistry Do the Work. Close the oven door and leave it alone for at least 12 hours. Longer is fine—24 hours is ideal if you can wait. The baking soda slowly reacts with the baked-on grime and breaks molecular bonds without harsh chemicals. This is the work phase where you do nothing. If you have a self-cleaning oven, ignore this step completely—that feature makes deep cleaning unnecessary.
6. Push Debris Away Fast. After the overnight soak, open the oven and use your plastic scraper to push the dried paste toward the center of the oven floor. The paste will flake off in sheets, and underneath it, the carbonized buildup should come away in chunks rather than requiring vigorous scrubbing. Work systematically from back to front and top to bottom. Don't panic if some paste remains in corners—vinegar will handle those next.
7. Remove All Loose Flakes. Use a damp cloth or a battery-powered handheld vacuum to remove the flaked paste and loosened buildup from the oven floor and surfaces. This step clears the way for the vinegar rinse to actually touch the enamel. If using a cloth, ring it out well so you're not soaking the oven. Work methodically and don't rush—you want the interior dry enough that vinegar spray will actually do something.
8. Fizz Away Final Residue. Fill a spray bottle with white vinegar and spray the interior surfaces, focusing on any remaining paste residue, stubborn spots, or areas where you can still see buildup. The vinegar reacts with any remaining baking soda, creating a fizzing action that lifts the last of the grime. Let it sit for 5-10 minutes. The smell is strong but temporary—it means the chemical reaction is working.
9. Polish to Shine. Use fresh, damp cloths to wipe down all interior surfaces. You may need two or three cloths as they get soiled. Wipe the sides, top, bottom, and back wall. Ring out each cloth well so you're wiping, not soaking. The oven should feel slick and clean when you're done, not gritty. Make a final pass with a dry cloth to remove any remaining moisture.
10. Scrub Racks Clean. Return to your bathtub and scrub the racks with a stiff brush or steel wool to remove the baked-on food buildup. The overnight soak will have softened everything significantly, so this should be quick work rather than brutal scrubbing. Rinse each rack thoroughly under running water. If stubborn spots remain, spray them with vinegar, wait two minutes, and scrub again.
11. Return Racks to Slots. Towel-dry each rack and place it back in the oven, aligning it with the support guides. Don't slide them in wet—they'll drip onto the newly cleaned surfaces. Make sure each rack sits level and fully seated in its slots. If a rack doesn't slide smoothly, pull it out and wipe the guides clean.
12. Heat and Air Out. Close the oven door and preheat to 350°F for 15 minutes. This dries out any lingering moisture and helps any final residual vinegar smell dissipate. Open a nearby window. You're not cooking yet—just letting the heat finish the drying process. After 15 minutes, turn it off and leave it open to cool.