Cleaning your oven regularly keeps it efficient and removes burnt grease and odors. Start by turning off the oven and letting it cool completely. Remove the racks and soak them in warm, soapy water. Make a paste using baking soda and water, then spread it over the interior surfaces, avoiding heating elements. Let it sit for several hours or overnight to loosen grime. Wipe the paste away with a damp cloth and spray vinegar to remove residue