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 wash away loose, greasy grime, sanitizes, and removes musty odor.
I regret ever buying a front loader washer! Clean your front loader! Takes away the mildew smell. I had known the part of this process not the first. I went & did it immediately. Very cool to know for my front loader!