What should I do if dishes come out dirty?

Check the loading pattern to ensure proper placement, clean and reinstall any filters as needed, select appropriate cycles based on soil levels, ensure a minimum incoming water temperature of 120°F (49°C), use fresh detergent in the correct amount, and scrape food from dishes prior to loading. (Page 23)

From the official KitchenAid Kdtm404kps Dishwasher manual, page 23

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