Other Great Tips!
If you don’t have a self-cleaning oven you can use a mixture of baking soda and water. Just keep adding water to about a cup of baking soda until the texture is that of a paste. Cover the inside of the over with the paste and let stand overnight. Wipe clean the next day or use a spatula to remove. Do not try to clean the heating elements with the paste.
To keep major spills from making a big mess in the future, line the bottom of your oven with foil.