Mold in Washing Machine: How to Remove It Fast

If you have noticed a musty smell coming from your laundry, mold in the washing machine units is likely the culprit.

It hides, spreads fast, and keeps coming back if you don’t know what you’re dealing with.

This guide explains exactly why it grows, where it hides, how to remove it, and what you can do to prevent it from returning.

Why Does Mold Grow in Washing Machines?

Mold spores float through the air and easily settle onto damp surfaces, and your washing machine is the perfect target.

After every cycle, residual moisture lingers inside the drum. Leftover detergent and fabric softener residue give mold a food source to thrive on.

Poor ventilation traps the dampness inside. Front-loaders are especially prone because their rubber door gaskets seal tightly, locking in moisture.

Under the right conditions, mold can start to grow quite quickly, sometimes within just 24 to 48 hours.

Where Does Mold Hide in Your Washing Machine?

Mold doesn’t just sit in plain sight; it creeps into the damp, hidden spots you rarely think to check. Here’s where to look:

• Rubber door gasket/seal: The most common hiding spot, especially in front-loaders, where moisture gets trapped in the folds.
• Drum interior: Residual water and detergent film coat the drum walls after every cycle.
• Detergent and fabric softener drawers: Damp residue builds up quickly, creating an ideal environment for mold.
• Lint filter: Easily overlooked and rarely cleaned, making it a prime spot for mold growth.
• Drainage lines and hoses: Hidden deep inside the machine, these stay consistently moist and dark.

How to Remove Mold from a Washing Machine: Step-by-Step

Removing mold from your washing machine is easier than you think. You just need the right steps and a little time. Before starting, wear rubber gloves and ensure good ventilation.

Pro Tip: Before starting, wear rubber gloves and ensure the room is well-ventilated.

Step 1: Empty the Machine

Remove all clothes from the drum and clear out any residue from the detergent dispensers. Never clean with laundry still inside.

Take a moment to check your pockets for tissues or debris before cleaning. It’s a simple step that helps prevent any clogging and keeps everything running smoothly.

Step 2: Clean the Rubber Gasket/Door Seal

Mix 1/4 cup bleach with 2 cups water (or use white vinegar) and wipe down the gasket with a microfiber cloth.

Use a toothbrush on tight folds, and press bleach-soaked paper towels against the seal for 10 minutes to treat heavy buildup before rinsing. Dry the gasket thoroughly afterward to prevent mold growth.

Step 3: Clean the Detergent Dispenser

Remove the tray, if possible, and scrub with warm, soapy water, using a toothbrush for tight corners. If it’s fixed in place, wipe thoroughly with a vinegar-soaked cloth.

Make sure the tray is completely dry before sliding it back in, so you can help prevent it from regrowing too quickly.

Step 4: Run a Hot Cleaning Cycle

Add 1 cup of liquid chlorine bleach to the drum or use a commercial cleaner tablet like Affresh. Run the longest, hottest cycle available to kill mold deep inside the machine.

This also helps flush out buildup in the drainage lines and hoses that you cannot easily reach by hand.

Step 5: Rinse, Then Dry Completely

Run a second empty hot water cycle to flush out any remaining residue. Then wipe down the drum, door, and gasket with a dry cloth, and leave the door open to air-dry fully.

Skipping this drying step is one of the most common reasons mold keeps coming back after cleaning.

Best Washing Machine Cleaners for Mold

Not all cleaners are equal for tackling mold in your washing machine. Using the right product greatly affects mold removal and prevention.

How to Remove Mold from a Front-Load Washer

Front-load washers are more prone to mold than top-loaders because their tight door seal locks in moisture after each cycle. Small habits can significantly help control mold.

• Tight door seal traps moisture: The rubber gasket folds create hidden pockets where water collects and mold thrives after every wash.
• Clean under and behind the gasket: Pull back the gasket folds fully and scrub deep inside, not just the visible surface.
• Use the sanitize cycle: If your machine has one, run it monthly to kill mold spores and bacteria with high heat.
• Switch to dryer balls: Liquid fabric softener leaves residue that feeds mold. Wool or plastic dryer balls are a cleaner alternative.
• Always use HE detergent: Regular detergent creates excess suds that leave behind buildup, giving mold more to feed on.

How to Remove Mold from a Top-Load Washer

Mold is less common in top-load washers but can grow under the lid, around the agitator, and in the detergent dispenser. Fortunately, they are easier to clean and dry than front-loaders.

• Check under the lid first: Moisture and detergent splatter collect along the lid rim and inner edges, making it a sneaky spot for mold.
• Scrub around the agitator: The base of the agitator traps residue and stays damp long after the cycle ends. Wipe it down with a vinegar or bleach solution.
• Clean the drum interior: Add 1 cup of bleach or white vinegar directly to the drum and run the longest, hottest cycle available.
• Wipe out the detergent dispenser: Remove and scrub the tray with warm soapy water, or wipe with a vinegar-soaked cloth if it is not removable.
• Leave the lid open after every wash: Top-loaders dry out faster than front-loaders, and simply leaving the lid open after each cycle goes a long way in preventing mold.

How to Prevent Mold from Coming Back

Cleaning mold once is not enough if your daily habits keep inviting it back. These simple preventive steps will keep your washing machine fresh and mold-free long term.

• Leave the door ajar after every wash: This lets moisture escape from the drum and gasket rather than being trapped inside.
• Remove wet laundry immediately: Damp clothes left in the drum create the perfect humid environment for mold to establish quickly.
• Wipe the gasket dry after each use: A quick wipe with a dry cloth after every cycle removes the moisture that mold needs to grow.
• Run a monthly cleaning cycle: Use a washing machine cleaner tablet, bleach, or white vinegar to flush out buildup and kill mold spores regularly.
• Use the correct detergent amount: Stick to about 2 tablespoons for a medium load. Excess detergent leaves residue that feeds mold over time.
• Switch to HE detergent and dryer balls: HE detergent minimizes suds buildup, and wool dryer balls replace liquid fabric softener that leaves mold-feeding residue.
• Control laundry room humidity: If your laundry area tends to stay humid, running a dehumidifier significantly reduces the moisture that mold needs to grow.

Is Mold in Your Washing Machine a Health Risk?

Mold in your washing machine can transfer spores onto clothing and bedding, triggering respiratory issues, allergies, and skin irritation in sensitive individuals.

Black mold strains are especially worth taking seriously. That said, mold contained to your washer is common and very manageable with regular cleaning.

If you spot mold spreading to surrounding walls or flooring, that is a larger problem and worth calling a professional to assess.

Wrapping It Up

Dealing with mold in washing machine units does not have to be a losing battle. Now that you know where it hides and how to fight it, you have everything you need to take action.

Clean it, build better habits, and check your machine monthly. A mold-free washer is within reach.

Did you find this guide helpful? Feel free to share it with someone whose laundry could use a little extra freshness!