Place a dishwasher-safe cup filled with plain white vinegar on the top rack of the dishwasher. Using the hottest water available, run the dishwasher through a cycle. The vinegar will help to wash away the loose, greasy grime, sanitizes, and helps remove the musty odor. Next, sprinkle a cupful of baking soda around the bottom of the tub and run it through a short cycle. The baking soda will help freshen and removing stains.
How to Clean Your Dishwasher - One Good Thing by Jillee
The best oven cleaner! Cover bottom of oven with baking soda, then pour vinegar so it's all wet. Let sit around 20 minutes or so then wipe all of it out with damp cloth or sponge. I leave my oven door open too. After drying you may see some white residue, wipe again.
The Only Spot Remover You'll Ever Need- One part Dawn dishwashing liquid mixed with two parts HYDROGEN PEROXIDE. Pour the mixture directly on the stain, and watch it disappear like MAGIC. (Particularly tough stain, can add baking soda & scrub.)