Yes, even the machines that do the cleaning and washing for you need to be cleaned, too. The automatic dishwasher is one machine that should be cleaned once every few months. All you need to get the job done is powdered lemonade drink and white vinegar. Fill a glass with white vinegar and place it upright inside the dishwasher. Then pour about 1/2-cup powdered lemon drink into the compartment where you normally put detergent. Turn on the dishwasher and run it empty. The citric acid in the powdered drink will help remove rust that builds up, and the white vinegar will help clear up mineral deposits.