How do I maintain the dishwasher to prevent odors?

Use affresh® dishwasher and disposer cleaner once a month as part of routine maintenance. Place one tablet in the main detergent tray and another in the prewash tray or at the bottom of the dishwasher, then run the dishwasher on the most aggressive cycle. Alternatively, if not used daily, run a rinse cycle with partial loads until a full load is ready.