How to Get Rid of Musty Smell in a Washing Machine

Learn how to get rid of musty smell in a washing machine with a practical, step-by-step approach. This guide covers causes, cleaning routines, preventive habits, and maintenance to keep your washer fresh and odor-free.

Best Washing Machine Team

January 23, 2026·5 min read

Washing Machine Detergent Cleaner Home Appliance

Musty Washer Odor Fix - Best Washing Machine — Photo by Adrienne Andersen via Pexels

Quick AnswerSteps

According to Best Washing Machine, you can get rid of a musty smell in your washing machine by a focused cleaning routine that targets the drum, door seal, and hoses, followed by prevention habits. Begin with a deep clean using vinegar or a washing-machine cleaner, then run an empty hot cycle. Keep the door ajar after use and dry seals to prevent future odor buildup.

What causes musty smell in a washing machine

A musty odor in a washing machine is typically the result of lingering moisture that creates a micro-ecosystem for mold and mildew. The combination of warm water, detergent residue, fabric softener buildup, and tight seals around the door can trap moisture in hard-to-reach places like the door gasket, detergent drawer, and the drum lip. When organic matter clings to these surfaces and stays damp, it starts to harbor microbes that give off a stale, musty scent. According to Best Washing Machine analysis, high humidity and infrequent cleaning accelerate this process, especially in front-load models where doors seal tightly and air circulation is limited. Recognizing these factors helps you tailor a cleaning routine that targets the real culprits rather than chasing symptoms at random. A proactive approach reduces odor resurgence and keeps fabrics smelling fresh after every wash.

Why odors linger in washers and where to focus

Musty smells often originate from three common hot spots: the door gasket, the detergent drawer, and the drum itself. The gasket’s folds trap water and detergent residues; the drawer can collect residual detergent and fabric softener; and the drum can accumulate mineral deposits and biofilm. In addition, standing water in hoses or a clogged filter can contribute to a sour odor. Understanding these zones guides you to apply cleaning agents precisely where odors form. If you notice visible mold or a persistent sour smell after cleaning, it may indicate longer-term moisture problems or a failing seal that needs professional attention. Regular attention to these areas drastically lowers odor recurrence and lengthens your washer’s service life.

How to structure a cleaning plan that actually works

A structured plan combines immediate odor removal with long-term prevention. Start with a thorough wipe-down of all accessible surfaces, then run a hot cleaning cycle using a proven cleaner or natural alternatives like vinegar and baking soda. After the cycle, ventilate the drum by leaving the door open for several hours. Finally, establish a simple routine: weekly quick wipe-downs, monthly deep cleans, and yearly professional service if you notice persistent issues. This balanced approach minimizes downtime and avoids the frustration of recurring musty scents. Best Washing Machine's guidance emphasizes consistency over intensity—short, regular sessions beat a single heavy clean that fades quickly.

Step-by-step routine for a deep clean (overview)

A practical deep-clean routine helps you tackle odor at the source. It begins with removing loose debris from the drum, seals, and detergent drawer, followed by applying a cleaning agent to break down biofilm. You then run a full cleaning cycle with hot water, rinse thoroughly, and dry all components completely. Finally, you prevent future odor by keeping doors ajar after washing and ensuring that the drawer and seals are dry. The result is a washer that stays fresh between uses, reducing the risk of mold growth and staining.

Targeted cleaning: drum, seals, and hoses

The drum is the heart of the washer and a common odor reservoir, especially if you wash damp items that shed residues. Clean around the drum rim with an alcohol-free cleaner and a microfiber cloth, paying special attention to the corners where lint and hair collect. The door seal is a hotspot for mold due to its crevices and moisture traps; wipe the folds and the outer edge, then use a soft brush to reach the micro-crevices. If you have accessible hoses, inspect for cracks or mineral buildup and wipe any residue you find. Keeping these components dry after each cycle minimizes the chance of odor returning.

Detergent drawer and water lines: clear and shine

Detergent and fabric softener residues form a sticky film that can harbor odors. Start by removing the drawer and rinsing it under warm water to remove buildup; scrub the corners with an old toothbrush to remove stubborn deposits. Clean the surrounding area with a cloth, and ensure the water inlet screens are free of debris. Reassemble the drawer and run a short rinse cycle to flush out any loosened residue. Cleanliness in these compartments is a simple but powerful guard against musty smells.

Maintenance cycles and drying practice

Routine maintenance cycles are essential to prevent odor formation. Run a hot water cycle with a cleaner every month, and at least quarterly, perform a deep clean that includes the drum, seals, and hoses. After each load, wipe the drum and seal dry, then leave the door open to promote air circulation. A good habit is to remove wet clothes promptly and avoid leaving damp items in the washer. These practices reduce moisture retention and create an environment that’s hostile to mold.

Preventive habits to keep it fresh longer

Prevention is easier than remediation. Keep the washer door ajar after cycles to allow air exchange, dry the gasket folds with a cloth, and store detergents in a dry, ventilated space to minimize moisture exposure. Use the correct detergent amount to avoid excess suds that leave residues, and consider running a monthly cleaning cycle even if odors aren’t present. If you have hard water, consider descaling periodically to prevent mineral deposits in hoses and the drum. These habits preserve a clean interior and stop musty smells before they start.

Choosing cleaners and knowing when to replace parts

There are several cleaning options: natural cleaners like white vinegar and baking soda, commercially formulated machine cleaners, or dishwasher-safe cleaning tablets designed for washers. Each method has its pros and cons, depending on your washer type and water hardness. Pay attention to manufacturer recommendations for cleaners compatible with your model. If you notice persistent odor despite cleaning, it may indicate worn door seals, a clogged drain, or a failing filter—these parts may require replacement to fully restore freshness.

Tools & Materials

Microfiber cloth(For wiping gasket, drum, and drawer.)
White vinegar(Deodorize and disinfect; used during the cleaning cycle.)
Old toothbrush or small scrub brush(Scrub tight folds in the door gasket and the detergent drawer.)
Washing-machine cleaner tablet or powder (optional)(Use if you prefer a dedicated cleaner for the deep-clean cycle.)
Spray bottle (optional)(Dilute vinegar solution for quick spot cleaning.)
Old towels or absorbent cloths(Dry surfaces after cleaning to prevent residual moisture.)

Steps

Estimated time: 60-90 minutes

1
Prepare the washer
Power off and unplug if accessible. Remove any laundry and unplug hoses if you need to inspect. Wipe the exterior and wipe away loose debris from the drum rim. This initial prep prevents clutter from interfering with cleaning.
Tip: Having everything organized helps you stay focused and makes the cleaning quicker.
2
Wipe seals and drawers
Mix a vinegar solution or your chosen cleaner and spray onto a microfiber cloth. Wipe the door gasket thoroughly, paying attention to folds where mold can hide. Remove and rinse the detergent drawer, scrubbing corners with a brush.
Tip: Use a toothbrush for tight corners; don’t skip the drawer corners where residue hides.
3
Clean the drum quickly
Wipe the inner drum surface with your cleaner or vinegar solution. Check for visible residue or black mold specks, especially around the drum lip and behind the door. Dry the drum edge after cleaning to reduce moisture retention.
Tip: If you see persistent mold, repeat spot cleaning in that area before the next step.
4
Run a cleaning cycle
Place cleaner in the drum or run a hot water cycle with vinegar. Allow the washer to complete the cycle, then run an empty rinse cycle to flush out loosened residue. Do not load clothes during these cycles.
Tip: If your model has a cleaning or maintenance cycle, use it for best results.
5
Tackle filters and hoses
Check and clean any accessible filters or screens and wipe the hose connections. If you notice mineral buildup or a clunking sound, inspect the hoses for wear and replace if necessary. Ensure the drain hose is free of kinks and obstructions.
Tip: Only perform hose checks if you’re comfortable; contact a professional if you see damage.
6
Dry and air out
After cycles, keep the door ajar to allow airflow. Wipe seals and drum dry with a clean towel. This step prevents moisture from lingering and reduces mold growth opportunities.
Tip: A quick nightly air-out is inexpensive and highly effective.
7
Prevent future odors
Incorporate a monthly cleaning cadence and weekly quick wipe-downs. Use only the necessary amount of detergent to minimize residue, and avoid leaving damp items in the washer for long.
Tip: Consider setting a reminder to perform the monthly maintenance routine.
8
Know when to replace parts
If odors persist after thorough cleaning, the issue may be worn door seals, a clogged drain, or fouled hoses. Replacing components often resolves stubborn smells and protects laundry freshness.
Tip: Consult a professional if you’re unsure about inspecting or replacing parts.

Pro Tip: Always start with a dry exterior wipe-down to minimize spreading moisture into clean areas.

Warning: Never mix bleach with vinegar or ammonia; this can create hazardous fumes.

Note: Keep a regular schedule for cleaning to prevent buildup rather than chasing odors.

FAQ

What causes a musty smell in a washing machine?

Musty smells are usually caused by mold and mildew growth in damp areas like the door seal, detergent drawer, and drum lip. Residue buildup from detergents and fabric softeners can feed this growth, especially in humid environments. Regular cleaning and proper drying can prevent these odors from forming.

How often should I clean my washing machine to prevent odors?

Aim for a thorough cleaning every month, with quick wipes after every few uses. If you notice moisture or residue, clean sooner. A consistent routine beats infrequent overhauls and reduces the chance of recurring odors.

Can I use bleach to remove musty smell?

Bleach can be effective for tough mold, but it must be used cautiously and never mixed with vinegar. Some washers have restrictions on bleach, so consult your manual. For many homeowners, vinegar or dedicated washer cleaners are safer options.

Is a musty smell harmful to health?

Prolonged exposure to mold odors can cause irritation for some people, particularly those with allergies or asthma. Proper cleaning, drying, and ventilation reduce exposure risks. If odors persist, consider inspecting for mold growth beyond the washer itself.

Why does the smell come back after cleaning?

If moisture remains or residue persists in hard-to-reach areas, odors can reappear quickly. Ensure complete drying after cycles and address any underlying issues like a worn seal or clogged drain. A recurring odor often signals a maintenance gap.

What is the best cleaner for washing machines?

There isn’t a single best cleaner for every model. Many households use white vinegar and baking soda, or a dedicated washer cleaner designed for machines. Always follow the manufacturer’s recommendations and test in an inconspicuous area first.