Symptoms
- Black or dark spots visible in the folds of the door gasket
- Musty smell noticeable near the door edges
- Spots don't wipe away easily with a quick pass of a cloth
- Mold seems to return within weeks of cleaning
Likely causes
- CommonMoisture trapped in the gasket foldsThe accordion-like folds of a gasket hold condensation and food residue, creating a damp environment mold thrives in.
- CommonDoor not sealing fully, allowing extra humidity inA poor seal introduces more moist air that condenses right at the gasket.
- CommonInfrequent cleaning of the gasket specificallyGaskets are easy to overlook during a general fridge cleaning since they're not a flat, obvious surface.
What to do
- Mix a solution of equal parts water and white vinegar, or a mild bleach solution if the gasket material allows it.
- Use an old toothbrush to scrub into the folds of the gasket where mold tends to hide.
- Rinse the area with a clean, damp cloth and dry thoroughly, since leftover moisture invites mold right back.
- Check the gasket's seal quality with the paper test, since a poor seal contributes to the moisture problem recurring.
- Clean the gasket on a regular schedule, such as monthly, rather than only when mold becomes visible.
- Leave the door open for a few minutes after cleaning to let the area fully air dry.
- If mold keeps returning despite regular cleaning and a good seal, consider replacing the gasket, since a compromised gasket surface can harbor mold more easily.
Tools and parts
- Old toothbrush
- White vinegar or mild bleach solution
- Soft cloth
Refrigerator door gasketSearch: “refrigerator door gasket seal replacement”
When to call a pro
If mold keeps returning despite regular cleaning and the gasket looks worn or damaged, replacing it is usually more effective than continued cleaning.
Safety
Use caution
If using a bleach solution, ventilate the area and never mix bleach with other cleaning chemicals like ammonia.