Ultimate Guide: How to Clean a Smelly Washing Machine

Fri Sep 26 2025

Laundry

If your washing machine smells bad, like mildew, musty odors, or even rotten eggs, you’re not alone. Over time, trapped moisture, detergent buildup, and mold can cause your washer to stink. Whether you have a front-load or top-loading clothes washer, learning how to clean your laundry washer the right way will keep it fresh and extend its life.

Here’s everything you need to know about why your washing machine stinks, how to clean it, and how to prevent odors from coming back.

miele-front-load-washer

Why Does My Washing Machine Smell?

Even new washers can develop unpleasant odors if not cared for properly. Here are the most common culprits:

Detergent Overload: Using too much detergent leaves behind residue that traps bacteria and moisture.
Fabric Softener Build-Up: Liquid softeners create a waxy coating that molds love to cling to.
Moisture Traps: Door seals, gaskets, and dispensers often hold onto water, especially in front-load machines.
Skipped Cleanings: Without monthly maintenance, grime and mildew build up inside the drum and detergent drawer.

Let’s fix it!

How to Clean a Washing Machine

Here’s a step-by-step process we’ve found works best to eliminate washing machine smells and restore freshness. Follow this process whether you have a top-loading washing machine or a front-load washing machine.

Step 1: Clean the Drum

Remove everything from the drum. No laundry should be left inside.
Pour two cups of white vinegar straight into the drum.
Run a hot cycle to flush out bacteria and break down odors.
Wipe the inside of the drum with a microfiber cloth to catch any lingering grime.

Step 2: Clean the Agitator (Top-Loading Washer)

If your washer has a removable agitator, take it out of the washer drum.
Soak it in warm, soapy water.
Use a toothbrush to scrub away detergent residue in tight areas.
Rinse and dry before reinstalling.

Step 3: Tackle the Gasket and Door

Inspect the gasket (the rubber seal around the door) for trapped lint, mildew, or grime.
Mix equal parts vinegar and water in a spray bottle.
Spray the gasket and scrub gently with a sponge or soft brush to loosen any build-up.
Wipe the gasket and door dry with a clean towel to prevent moisture from sitting there.

Step 4: Deep Clean the Detergent Drawer

If your washer allows, remove the detergent drawer.
Soak the drawer in warm, soapy water to soften any residue.
Use an old toothbrush to scrub out all the little corners and crevices.
Wipe the inside of the compartment where the drawer slides in to remove any hidden grime.

Why Is It Important to Regularly Clean Your Washer?

Regular washer maintenance is essential for performance, hygiene, and longevity. Here’s why it matters:

Prevents Mildew: Regular cleaning removes mold, mildew, and bacteria that cause musty odors.
Better Cleaning Results: Clothes come out fresher without detergent residue.
Extends Appliance Life: Maintenance reduces wear and tear, saving you money long-term.
Allergen Control: Mold and residue can trigger allergies; cleaning prevents this.
Efficiency Boost: A clean washer runs more smoothly and uses less energy.

How often should I clean my washer?

Plan to clean your washer once a month. Regular maintenance prevents odors, protects your clothes, and extends the life of the machine.

Easy Tips to Keep Your Washer Smelling Great

A little maintenance goes a long way to keep your washer odor-free. Whether you’re dealing with a high-efficiency front-load washer or a traditional top-load washer, following these quick tips can help prevent buildup and mildew from sneaking up on you. Here are some simple, practical steps to keep odors away for good:

Use the right amount of detergent. Too much soap might seem helpful, but it leaves behind a residue that traps moisture and bacteria. Stick to the recommended dose to prevent buildup.
💡 Pro tip: Many new washing machine models have auto-dispensing features that make this even easier to manage.
Leave the washer door open after every load. This gives the drum a chance to dry out and prevents moisture from sitting inside, which is the perfect breeding ground for mold.
Wipe the gasket and drum dry once you’re finished. It only takes a few seconds and helps stop mildew from forming in hard-to-reach areas.
Run a cleaning cycle every month with hot water and vinegar or a store-bought washer cleaner. This routine flushes out detergent residue and grime before it can become a problem.
Skip fabric softener. It leaves behind a sticky film that encourages mold growth. Instead, try vinegar as a natural alternative to keep clothes soft and your washer free from buildup.

speed-queen-tr7

Top Washers Designed to Stay Fresh

If your current machine constantly smells bad, it may be time to upgrade. Here are a few washers we recommend that feature advanced odor-prevention technology.

Speed Queen TR7 Ultra-Quiet Top Load Washer

Legendary durability, Perfect Wash™ technology, and ultra-quiet performance make it a great choice for families.

Model: TR7003BN
Perfect Wash™: Tailor wash cycles for ultimate fabric care with this innovative technology.
Ultra Quiet: Operates at just 43dB during agitation, perfect for quiet homes with sleeping babies, pets, or remote work.
Legendary Reliability: Built to last 25 years, backed by 110+ years of trusted performance.
Out-of-Balance Management: Completes cycles even when loads are uneven, thanks to commercial-grade components.

Miele Front-Loading Washing Machine

Features AddLoad convenience, fabric-specific wash cycles, and app connectivity for precision cleaning.

Model: WWD660WCS
AddLoad: Add or remove items mid-cycle without canceling the program.
Miele@home: Control your washer remotely via the Miele app by connecting it to your home network.
Delicates Program: Protects synthetic fabrics and keeps them looking new.
Outerwear Program: Ensures high-performance textiles maintain their functionality in any weather.

LG Mega Capacity Smart Front Load Washer

TurboWash® technology and built-in AI ensure clothes come out fresh and allergen-free in less time.

Model: WM8900HBA
TurboWash® Technology: Complete large loads in 30 minutes without sacrificing cleaning power.
Built-in Intelligence: AI selects the perfect settings and even syncs with dryers for optimized cycles.
Powerful Steam Cleaning: Certified by the AAFA to remove over 95% of allergens like dust and pet dander.

Maytag Smart Pet Pro Front Load Washer

With a dedicated Pet Pro Filter, it removes more pet hair than standard washers while offering sanitize and steam cycles.

Model: MFW7020RF
Pet Pro Filter: This filter effectively removes pet hair when paired with the Pet Pro option, making it perfect for homes with furry friends.
Sanitize Cycle: Kills 99.7% of household bacteria and allergens, giving you a deeper, healthier clean.
Steam Option: Penetrates fabrics to tackle tough stains, with the flexibility to use alongside the Extra Power button on select cycles.

Upgrade Your Laundry Room at Howard’s

Ready to say goodbye to washing machine smells for good? At Howard’s, we carry the best washers and dryers to keep your laundry fresh and your home running smoothly. Visit one of our Southern California appliance stores or shop online today.

Visit one of our appliance stores in Laguna Hills, Long Beach, Covina, Torrance, and the surrounding area to learn more about our exclusive offers.

FAQ: What to do About a Smelly Washer

Why does my washing machine smell like mildew?

Moisture trapped in the drum, detergent residue, and mold growth in gaskets or drawers are the main culprits behind a washing machine's musty odor.

Can I use vinegar to clean my washer?

Yes. Washing a washing machine with vinegar is one of the easiest natural methods to eliminate odors and buildup. Run a hot cycle with two cups of vinegar for best results.

How to sanitize a washing machine?

To sanitize your washer, run a hot cycle with either bleach or distilled white vinegar. Add bleach to the detergent dispenser (about 1/2 cup) or pour vinegar directly into the drum. For extra cleaning power, wipe down the gasket and dispenser drawer after the cycle finishes.

How do I make my washing smell better?

Use the right amount of detergent (too much can cause odors), keep the door open between loads to prevent moisture build-up, and run a monthly cleaning cycle with vinegar or a washer cleaner. For an added boost, toss in scented dryer sheets or laundry boosters during the drying process.

Why does my washing machine smell even after cleaning?

If your washer still stinks, check for hidden buildup in the gasket, detergent drawer, or drain filter. Persistent odors may also mean it’s time to replace the washer.