Strong bad smell from inside the dishwasher, even when not in use.

Safety first: Turn off the appliance before cleaning internal parts.

• Deep clean filters and sump: Remove all filters and scrub with hot soapy water. Clean the sump area thoroughly, removing any trapped food or sludge.
• Clean door seals: Wipe the door gasket and around the door edges with a mild disinfectant solution.
• Run cleaning cycle: Run an empty hot cycle with a dishwasher cleaner or a cup of white vinegar placed upright on the top rack (do not mix with bleach).
• Improve usage habits: Scrape plates before loading and run a hot program at least once a week to reduce build-up.

Persistent odors after cleaning may indicate build-up in hoses; a technician can inspect and replace if necessary.