<human>:  How do I clean my oven without harsh chemicals?
<bot>: You can clean your oven without harsh chemicals by using a combination of baking soda, vinegar and water. Mix ½ cup of baking soda with a little warm water and spread it over the bottom of the oven. Let the mixture sit overnight, then use a damp rag to scrub off the dirt. To finish, mix a ½ cup of vinegar with a cup of water in a spray bottle and spray the surface. Wipe the oven clean with a paper towel.