Fix a Washing Machine That Smells Like Mildew

The problem is trapped moisture + detergent residue. Front-loaders are especially prone because water pools in the rubber gasket. The fix is simple: clean the machine, then change habits to prevent recurrence.

Immediate Fix (Today)

1. Run a cleaning cycle: Pour 2 cups white vinegar into the drum. Run the hottest, longest cycle with no clothes. Vinegar kills mold and dissolves buildup.
2. Scrub the gasket: Pull back the rubber door seal and wipe with a rag soaked in vinegar or diluted bleach (1:1 with water). Mildew hides in the folds — you'll see black spots.
3. Clean the detergent drawer: Remove it (usually pulls straight out) and scrub with hot soapy water. Residue here feeds mold.
4. Check the drain filter: Located behind a small panel at the bottom front. Unscrew it over a towel — water will drain. Remove lint, hair, and debris. This traps stagnant water.

Monthly Maintenance

1. Run a hot cleaning cycle with vinegar or an affresh tablet once a month.
2. Wipe the gasket dry after each load.
3. Leave the door cracked open 2-3 inches between washes — this is the single most important habit change. Closed doors trap humidity.

Habit Changes That Prevent Recurrence

• Use less detergent: Excess soap leaves residue that mold feeds on. Use 1/2 to 2/3 the recommended amount — clothes will still get clean.
• Switch to liquid detergent: Powder clumps and leaves more residue.
• Remove clothes immediately: Wet clothes sitting in the drum = instant mildew. Set a timer.

Pro tip: If the smell persists after cleaning, the drain hose may have a clog or sag where water pools. Check that it's elevated higher than the water level in the drum and has no kinks. If you're on a septic system, sewer gas can also back up through the drain — pour a cup of water down the standpipe weekly to keep the P-trap sealed.