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Here's how to prevent mold from growing in your washer and how to kill it if you have it

Use these five tips to keep your washing machine mold- and mildew-free.

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Make sure you keep your washer clean to prevent mold and mildew growth.

Chris Monroe/CNET

While a mixture of water, liquid detergent and softeners may get your clothes clean, it can also turn your high-efficiency washing machine into a breeding ground for bacteria. And if you only use the cold-water setting, your front- or top-loading washer is even more likely to grow mold. 

It's not just your laundry room that can start to smell like rotten eggs: If you don't deal with the chronic problem, your newly washed clothes can also take on a sulfur smell. 

Fortunately, you don't have to live with that smell. By periodically following a few steps, you can make sure your washing machine never grows mold. Read on for tips on how to keep mold out of your washer and what to do if it's already there.

Wipe it down

After you're finished using your washing machine for the day, make sure you wipe down any part of the washer that is damp. This includes the lid, drum, door, rubber gaskets and detergent dispenser (if your machine has that feature). Keep an old towel on hand just for this purpose.

Leave the lid open

Mold grows in dark, moist areas, which is what your washer becomes after you've unloaded the clothes. Leaving the door open helps to ventilate the washer and prevent mold from growing in the first place.

Remove wet clothes promptly

When you're planning to throw a load of laundry in, make sure you'll be home to remove the clothes when the timer goes off. That means don't start the washer before going to work or bed. Not only does this prevent mold from growing in your washer but also keeps your clean clothes from mildewing.


The seals in your washer hold moisture that can help mold grow.

Ry Crist/CNET

Regularly clean the seals

While mold contamination can happen in any washer, it's especially common in high-efficiency (aka HE) front-load washers. That's why you should regularly wash the gaskets and seals around the door. The gaskets make sure water doesn't leak out around the door and also do a good job sealing in the moisture than can help mold grow. Make sure you dry the seals along with the rest of your washer to prevent moisture from sticking around.

Use powder detergent

Liquid detergents can leave a residue in your washing machine, giving mold a food source. So the first thing to keep mold in check is to make sure you're using a laundry detergent made specifically for your HE washer, which will produce fewer suds. (Look for the letters HE on the soap container.) The next step is to steer clear of the liquid and switch to powder detergent or pods. And whichever you choose, make sure you're using only as much as you need to wash your clothes.


Use bleach or vinegar to kill mold in your washing machine.

Taylor Martin/CNET

Killing mold that's already in your washer

If you've got mold, here's how to get rid of it.

1. Start by putting on gloves and grabbing an old towel that you don't care about.

2. Mix a solution of either bleach and hot water or vinegar and hot water. Never mix bleach and vinegar together, as it creates a chlorine gas that can be harmful to you.

3. Dip the towel in the mixture and start scrubbing away any visible mold. Make sure you hit the detergent dispenser and around the gaskets.

4. If there's a gasket around the door (front-load washers have them), carefully and thoroughly clean and dry it, including all the folds.

5. Run a wash cycle on the hottest setting your machine offers with a cup of bleach or vinegar. If using bleach, pour it in the compartment designated for bleach. If using vinegar, pour it in the detergent slot. If your machine has a clean cycle, you can use that setting. This should kill any hidden mold that you may have missed.

6. Next, use another old towel and wipe away all the moisture in your washing machine. This includes the drum, dispensers, seals and any other areas you can reach.

7. Last, leave the door to your washer open to allow air circulation to dry out any parts you missed. Doing this monthly will help prevent mold growth.

Once, you've cleaned your washer, it's time to move on to the rest of your house. Start with the bathroom -- here's how to clean your showerhead, simple one-hour science hack for degunking, and how to unclog a toilet without a plunger.

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