You will need some vinegar An empty spray bottle (to fill with vinegar) paper towels and some baking soda, a spoon, a sponge and a bowl filled with water! Start by adding baking soda to the bowl of water! Add baking soda until you get a paste-like mixture. Next, remove the grill from your oven. After that, use a sponge to apply your mixture to the inside of your oven! Make sure to cover every corner of your oven. In order for your mixture to work its magic, you will have to wait for about 12 hours! You should then be able to clean your oven with a wet paper towel. The parts that are still covered in your baking soda mixture can be cleaned with some vinegar!