my oven needs cleaning and i can't find a self clean button, so i'm guessing it doesn't have one i've never actually cleaned an oven by hand.

i'm reading that some ppl turn the oven on with a bowl of ammonia and a pot of water, others make a baking soda paste and brush it on the inside of the oven and let it sit on there overnight, then scrub off or spray with vinegar. other ppl say you can't really get it clean without chemical cleaners.

any suggestions?