It sounds backward, but the machine that cleans your clothes needs regular cleaning itself, and a musty smell or film on your laundry is the first sign it has been neglected. Knowing how to wash washer machine drums, seals, and dispensers takes about 30 minutes and stops the buildup of detergent residue, mineral scale, and mildew that cause odors. Whether you run a front-loader or a top-loader, the routine is simple and uses supplies you probably already own. Here is the complete process.
- Why Washing Machines Get Dirty
- What You Will Need
- Step 1: Clean the Drum
- Step 2: Clean the Door Gasket (Front-Loaders)
- Step 3: Clean the Dispensers
- Step 4: Wipe the Exterior and Controls
- Step 5: Address the Filter and Drain (If Equipped)
- How Often to Clean
- Daily Habits That Keep It Fresh
- Top-Loader vs Front-Loader Cleaning Differences
- Dealing With Stubborn Odors
- Hard Water Considerations
Why Washing Machines Get Dirty
Every load leaves behind a little detergent, fabric softener, body oil, and lint. In warm, damp conditions, that residue becomes a breeding ground for mold and bacteria, especially in front-loaders where water collects in the rubber door gasket. Hard water adds mineral scale on top. Over time you get a sour, musty smell and clothes that come out less than fresh. Regular cleaning reverses all of it.
What You Will Need
- White distilled vinegar (about 2 cups) or a commercial washing machine cleaner tablet
- Baking soda (about 1/2 cup)
- A microfiber cloth and an old toothbrush
- Warm water and a small bucket or bowl
You can use either the vinegar-and-baking-soda method or a store-bought cleaner. Avoid mixing bleach with vinegar, since the combination releases harmful fumes. Pick one approach and stick with it for a given cleaning.
Step 1: Clean the Drum
Run an empty load on the hottest, largest setting to start. If your machine has a dedicated tub clean or sanitize cycle, use that. For the vinegar method, pour 2 cups of white vinegar into the detergent dispenser or directly into the drum and run the hot cycle. Vinegar dissolves soap scum and mineral deposits while neutralizing odors.
For a deeper clean, after the vinegar cycle, sprinkle 1/2 cup of baking soda directly into the drum and run a second hot cycle. The baking soda scrubs away lingering residue and freshens the interior. If you prefer a commercial cleaner, drop the tablet in the empty drum and run the recommended cycle instead.
Step 2: Clean the Door Gasket (Front-Loaders)
The rubber seal around a front-loading door is the number one spot for mold and grime. Pull back the folds of the gasket and you will often find trapped water, hair, and dark spots. Wipe the entire seal with a cloth dampened in a vinegar-water solution, and use the toothbrush to scrub into the creases. Dry it thoroughly when you finish. This step alone eliminates most front-loader odor.
Step 3: Clean the Dispensers
Detergent and softener dispensers accumulate sticky, crusty buildup that harbors mildew. Many trays pull out completely; remove yours if possible and soak it in warm water. Scrub the compartments and the housing with the toothbrush, paying attention to the softener cup where residue collects. Rinse, dry, and slide it back in. If the tray does not detach, clean it in place as best you can.
Step 4: Wipe the Exterior and Controls
Finish by wiping down the lid or door, the control panel, and the top of the machine with a damp microfiber cloth. Clean around the bleach and detergent ports. A streak-free exterior makes the whole laundry area feel cleaner and lets you spot leaks or rust early.
Step 5: Address the Filter and Drain (If Equipped)
Many front-loaders have a small drain pump filter behind a panel near the bottom front. Check your manual, place a towel and shallow pan underneath to catch water, then unscrew the filter and clear out lint, coins, and debris. Doing this every few months prevents drainage problems and odors. Always have the machine off before opening this access.
How Often to Clean
Run a cleaning cycle once a month for households that do laundry frequently, or every two to three months for lighter use. Wipe the gasket after heavy loads, and get in the habit of leaving the door or lid open between washes so the interior dries out. That single habit does more to prevent odor than almost anything else.
Daily Habits That Keep It Fresh
- Use the correct amount of detergent; more is not better and leaves residue
- Switch to HE detergent if you own a high-efficiency machine
- Remove wet laundry promptly so it does not sour in the drum
- Leave the door cracked open to air out between uses
Top-Loader vs Front-Loader Cleaning Differences
The two machine styles need slightly different attention. Front-loaders are far more prone to odor because the door gasket traps water and the drum seals tightly, so the rubber gasket and the drain pump filter are your priorities. Top-loaders, especially high-efficiency models without an agitator, accumulate residue around the wash plate and under the lid, so focus your scrubbing there. Older agitator top-loaders rarely smell because they use so much water, but they still benefit from a vinegar cycle to clear soap scum and mineral scale. Adjust your routine to the machine you own.
Dealing With Stubborn Odors
If a musty smell persists after a normal cleaning, the source is usually hidden biofilm. Run back-to-back hot cycles, the first with vinegar and the second with baking soda, and scrub the gasket folds thoroughly with an old toothbrush. Check and clean the drain pump filter, which often holds standing, smelly water. If odor returns quickly, you may be using too much detergent or fabric softener, both of which leave a residue that feeds odor-causing bacteria. Cutting your detergent dose and switching to less softener frequently solves a recurring smell on its own.
Hard Water Considerations
Homes with hard water face an extra challenge: minerals build up on the heating element, drum, and hoses, reducing efficiency and trapping detergent. If you have hard water, a monthly vinegar cycle is especially valuable for dissolving scale, and a commercial descaling washer cleaner can tackle heavier deposits. You may also notice your detergent works less effectively, so a water softener or a detergent formulated for hard water can improve both cleaning results and machine longevity.
A clean washing machine is the foundation of genuinely clean laundry. Spend half an hour each month running a hot cleaning cycle, wiping the gasket and dispensers, and airing out the drum, and you will banish odors, extend the life of the appliance, and get fresher results from every load.
