How to Remove Mold from Washing Machine (Gasket Mold)

Difficulty Medium
Time 20-30 min
How Often As needed, prevent monthly
⚠️ Safety Warning

If mold has penetrated behind the gasket or into areas you cannot reach, the gasket may need professional replacement. Some front-loader gaskets cost $50-150 to replace.

What You'll Need

Step-by-Step Method

1
Clean the gasket

Put on gloves. Pull back the rubber door gasket folds. Spray hydrogen peroxide directly on all visible mold. Let sit 10 minutes. Scrub the gasket folds with a toothbrush. Wipe clean with a damp cloth.

15 min
The gasket is the #1 location for washing machine mold. Check both the inner and outer folds.
2
Run a hot vinegar cycle

Add 2 cups white vinegar to the detergent dispenser. Run the hottest, longest cycle with no clothes. This kills mold and dissolves residue inside the drum, hoses, and pump.

1 cycle
3
Run a baking soda cycle

Add 1/2 cup baking soda directly to the drum. Run another hot cycle. This neutralizes remaining odor and loosens any final residue.

1 cycle
4
Clean dispensers

Remove detergent and fabric softener dispensers. Soak in hot water, scrub mold with a toothbrush, rinse and replace.

5 min
5
Prevent recurrence

Leave the door ajar after every wash. Use HE detergent only. Do not use more detergent than directed. Wipe the gasket after every load.

Ongoing
Excess detergent is the second biggest cause of washing machine mold. It leaves residue that feeds mold. Use less than you think you need.
🚫 What NOT to Do
  • Do not use bleach and vinegar in the same cycle
  • Do not leave wet clothes in the washer for more than a few hours
  • Do not close the door between loads (traps moisture)
💡 Pro Tips from The Freak
  • This problem is almost exclusively a front-loader issue. Top-loaders dry out more easily.
  • Many front-loaders have a 'tub clean' or 'self-clean' cycle. Use it monthly.
  • Switch to powdered detergent or detergent pods to reduce residue buildup.

Frequently Asked Questions

The door gasket creates a sealed environment that traps moisture between loads. Combined with detergent residue and warm temperatures, it is an ideal mold habitat. The design trade-off of front-loaders (better cleaning, less water) comes with this maintenance requirement. Leaving the door ajar and monthly cleaning cycles prevents it.

Sources & Methodology

Front-loader gasket mold is the most common maintenance issue reported in consumer appliance surveys. Prevention methods per major manufacturer guidelines (LG, Samsung, Whirlpool).

Related Guides

Shower

Bathroom Ceiling

Basement

Last reviewed: March 20, 2026

The Clean Freak provides cleaning guidance for informational purposes. Not a substitute for professional cleaning or mold remediation advice. Full disclaimer.