Place a dishwasher-safe cup filled with plain white vinegar on the top rack. 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.... good to do every 6 mths
Over time, towels build up detergent and fabric softener, leaving them unable to absorb as much water and smelling funky. Recharge them by washing them once with hot water and one cup vinegar, then a second time with hot water and half cup baking soda. This strips the residue and leaves them fresh and able to absorb more water again. Works like a charm!