A washing machine that smells sour is usually dealing with trapped moisture, detergent buildup, or grime around the gasket and drawer.

What you need

• White vinegar
• Baking soda
• Microfiber cloths
• Small brush or toothbrush

Front-load focus points

• the rubber door gasket
• the detergent drawer
• the drum
• the door left closed between loads

Cleaning steps

1. Wipe inside the rubber gasket and remove lint or sludge.
2. Pull out the detergent drawer and wash it.
3. Run a hot empty cycle with white vinegar.
4. Run a second cycle with baking soda if the smell is still strong.
5. Wipe the drum dry.
6. Leave the door and drawer open afterward.

Why the smell keeps returning

• too much detergent
• fabric softener residue
• shutting the door immediately after every wash
• no regular hot maintenance cycle

Granny’s bottom line

The machine cannot dry itself if you seal it shut. Cleaning helps, but airflow is what keeps the smell away.