Your washing machine cleans your clothes. But who cleans the washing machine? Most people assume the machine takes care of itself since it runs with soap and water every cycle. That assumption leads to a slow accumulation of detergent residue, fabric softener buildup, mold, mildew, and the unmistakable musty smell that clings to supposedly clean laundry.
A washing machine needs a deliberate deep clean roughly once a month. The process differs between front-loaders and top-loaders, so this guide covers both.
Signs Your Washing Machine Needs Cleaning
The most obvious sign is smell. If your laundry comes out with a musty, sour odor even after a full wash cycle, the problem is the machine, not the clothes. A second common sign is visible mold or mildew, particularly in the rubber gasket of a front-loader. Black or dark gray spots along the door seal are mold colonies.
Less obvious signs include white streaks on dark clothing after washing and water that does not drain completely. These indicate buildup in the drum, hoses, or filter.
Deep Cleaning a Front-Loader
Front-loading machines are more prone to mold and odor issues because the door seal traps water after every cycle. The deep clean targets four areas: the drum, the rubber gasket, the detergent drawer, and the filter.
Start with the rubber gasket. Pull back the folds of the door seal and inspect every inch. Mold hides deep in the crevices. Mix a solution of equal parts white vinegar and water in a spray bottle. Spray the gasket thoroughly, then scrub with a microfiber cloth or an old toothbrush for the tight folds. For established mold, a paste of baking soda and water applied with the toothbrush works better than liquid alone. Dry the gasket completely with a clean towel when finished.
Next, run a cleaning cycle. Most modern front-loaders have a dedicated clean cycle setting. If yours does, use it. Add two cups of white vinegar directly into the drum. For machines without a clean cycle, run the hottest and longest cycle available with the vinegar. Some people prefer commercial washer cleaning tablets like Affresh. The tablets are more expensive than vinegar but formulated specifically to dissolve detergent residue and mineral buildup. Use whichever you prefer. Run a second rinse cycle after the cleaning cycle to flush out any remaining residue.
The detergent drawer is often overlooked and often disgusting. Remove the drawer completely. Most pull out by pressing a release tab. Soak the entire drawer in warm water with dish soap. Scrub the individual compartments with an old toothbrush to remove caked-on detergent and fabric softener. While the drawer is out, use the toothbrush to clean inside the drawer cavity on the machine itself. Mold and slime accumulate in the cavity even when the drawer appears clean.
Clean the drain pump filter. This is usually located behind a small access panel at the bottom front of the machine. Place a towel and a shallow pan beneath the panel before opening. Unscrew the filter cap slowly. Water will drain out. Remove any debris caught in the filter, including coins, hairpins, lint, and the occasional sock. Rinse the filter under running water and screw it back in tightly.
Deep Cleaning a Top-Loader
Top-loading machines develop different problems. They are less prone to mold in the door seal but more prone to residue buildup on the drum itself and in the agitator.
Fill the machine with hot water on the largest load setting. While the water fills, add four cups of white vinegar. Let the machine agitate for a minute to mix the vinegar into the water, then pause the cycle or open the lid to stop the wash. Allow the vinegar water to sit for one hour. This soaking period dissolves detergent residue and mineral buildup that a regular cycle cannot touch.
After the hour, close the lid and let the cycle complete. Run a second cycle on hot with two cups of baking soda added directly to the drum. The baking soda cycle deodorizes and removes any remaining vinegar smell.
For machines with a fabric softener dispenser or a bleach dispenser, clean these separately. Remove them if possible and soak in warm soapy water. Use a pipe cleaner or a small brush to clear any clogs in the dispenser openings.
Top-loaders also have a lint filter that needs attention. The location varies by model. Some have a removable filter cartridge near the top of the drum. Others have a mesh filter inside the agitator. Still others have no visible filter at all because lint is designed to wash away with the drain water. Check the manual for your specific model. If your machine has a filter, clean it monthly.
The Detergent Drawer: Universal Steps
The detergent drawer benefits from the same treatment regardless of machine type. Remove, soak, scrub, and dry. Fabric softener leaves a waxy residue that harbors bacteria.
If your drawer has mold in crevices you cannot reach, soak it in a bleach solution of one tablespoon bleach to one quart of water for fifteen minutes. Rinse extremely thoroughly afterward. Any bleach residue that transfers to laundry will ruin clothes.
Monthly Maintenance Schedule
Consistency prevents the deep clean from becoming an ordeal. Wipe the rubber gasket dry after every wash cycle if you have a front-loader. Leave the door open between loads so the drum dries completely.
Once a month, run the full cleaning cycle as described above. Set a recurring calendar reminder. The monthly clean takes about fifteen minutes of active work plus cycle time.
Once every three months, clean the detergent drawer and the drain pump filter. These do not need monthly attention in most households unless you use fabric softener regularly, in which case monthly drawer cleaning is warranted.
What Not to Use
Avoid bleach in the main cleaning cycle unless your machine manual specifically recommends it. Bleach can damage rubber seals and hoses over time. It is also less effective than vinegar at dissolving mineral buildup from hard water.
Do not mix vinegar and bleach in any cleaning application. The combination produces chlorine gas, which is toxic. If you use a bleach-based commercial cleaner, do not run a vinegar cycle immediately afterward. Rinse thoroughly with a water cycle in between.
A clean washing machine is not an optional luxury. It is the foundation of actually clean laundry. The monthly deep clean commitment pays off in fresher clothes, longer machine life, and the elimination of that mysterious smell that has been bothering you for months without you realizing the source was the machine itself.
