How to Clean Your Washing Machine (It's Dirtier Than You Think)

Your Washing Machine Needs a Bath Too

Here is something most people never think about: the appliance that cleans your clothes is probably one of the dirtiest things in your home. I learned this the hard way when I pulled back the rubber gasket on my front-load washer and found a ring of black mold that looked like it belonged in a horror movie.

If you have ever noticed a musty smell on your “clean” laundry, or spotted dark specks on clothes after a wash cycle, your machine is trying to tell you something. The warm, damp environment inside your washer is a paradise for mold, mildew, and bacteria. Add in detergent residue, fabric softener buildup, and whatever comes off your clothes, and you have got a recipe for a seriously grimy machine.

The good news is that cleaning your washing machine is straightforward, takes about 30~45 minutes of active work, and only requires supplies you probably already have at home.

What You Will Need

Before we dive in, gather these supplies:

• White distilled vinegar (at least 2 cups)
• Baking soda (half a cup)
• A spray bottle
• Microfiber cloths or old towels
• An old toothbrush
• Rubber gloves (optional but recommended)

If you prefer a commercial solution, products like Affresh or OxiClean Washing Machine Cleaner work great too. But honestly, vinegar and baking soda handle most situations perfectly well.

How to Clean a Front-Load Washing Machine

Front-loaders are notorious for developing mold and odors because of their horizontal drum design and tight rubber gasket that traps moisture. Here is my step-by-step process.

Step 1: Clean the Rubber Gasket

This is where the worst of it hides. Pull back the rubber seal around the door and prepare yourself. You might find mold, hair, coins, and mystery gunk.

Spray the entire gasket with a 50/50 mixture of white vinegar and water. Let it sit for 5~10 minutes. Then take your microfiber cloth and wipe all the way around the seal, getting into every fold. For stubborn mold spots, use the old toothbrush with a paste of baking soda and a little water. Scrub gently but thoroughly.

I do this part first because it is the most impactful. The difference is immediately visible, and it is oddly satisfying.

Step 2: Clean the Detergent Drawer

Pull out the detergent dispenser drawer completely. Most models have a release tab you press while pulling. Soak the drawer in a sink filled with hot water and a cup of vinegar for 15~20 minutes.

While the drawer soaks, use the toothbrush to clean inside the cavity where the drawer sits. You will likely find a layer of gunky detergent residue and possibly some mold. Spray with vinegar and scrub it clean.

After soaking, scrub the drawer itself, rinse it, dry it, and slide it back in.

Step 3: Run a Hot Cleaning Cycle

Now for the drum itself. Add 2 cups of white vinegar directly into the drum (not the dispenser). Select the hottest water setting and the longest cycle your machine offers. Many modern washers have a dedicated “Clean” or “Tub Clean” cycle. Use that if available.

Let the cycle run completely. The vinegar will dissolve mineral deposits, break down detergent residue, and kill most bacteria and mold.

Step 4: Run a Baking Soda Cycle

After the vinegar cycle finishes, sprinkle half a cup of baking soda directly into the drum. Run another hot cycle. This neutralizes any remaining vinegar and tackles odors that vinegar alone might miss.

Step 5: Wipe Down the Exterior

While the second cycle runs, wipe down the outside of the machine, the door glass, and the control panel with a damp cloth sprayed with vinegar solution. Do not forget the top and sides where dust accumulates.

Step 6: Clean the Drain Filter

This step is critical and often overlooked. Your front-loader has a drain pump filter, usually located behind a small panel at the bottom front of the machine. Place a towel and a shallow pan underneath before opening it, because water will come out.

Unscrew the filter cap slowly. Let the water drain into the pan. Pull out the filter and remove any debris. I have found coins, hairpins, and even a sock in mine. Rinse the filter under running water, scrub if needed, and replace it.

How to Clean a Top-Load Washing Machine

Top-loaders are generally less prone to mold issues, but they still need regular cleaning. The process is simpler.

Step 1: Fill and Pause

Set your washer to the hottest and largest load setting. Start the cycle and let it fill with water. Add 4 cups of white vinegar. Let the agitator run for a minute to mix the vinegar, then pause the cycle and let it soak for 1 hour.

Step 2: Scrub While Soaking

While the vinegar solution sits, dip a cloth into the water and wipe down the inside of the lid, the rim, and the agitator or impeller. Use the toothbrush for any visible buildup.

Step 3: Complete the Cycle

After an hour, resume the cycle and let it run to completion.

Step 4: Baking Soda Round

Fill the washer again with hot water, add half a cup of baking soda, agitate briefly, soak for 30 minutes, then complete the cycle.

Step 5: Wipe Everything Down

Wipe the drum, rim, lid, and exterior with a clean cloth.

Prevention: Keeping Your Washer Clean Longer

Cleaning your washer monthly is great, but these daily habits will keep things fresh between deep cleans:

Leave the door open after every wash. This is the single most important thing you can do. Closing the door traps moisture and creates a breeding ground for mold. Just leave it cracked open for a few hours after each load.

Remove wet laundry promptly. Do not let clean clothes sit in the drum. Transfer them to the dryer or hanging rack within 30 minutes of the cycle ending.

Use the right amount of detergent. More soap does not mean cleaner clothes. Excess detergent leaves residue that feeds mold and bacteria. Follow the manufacturer’s recommendations, and if you have a high-efficiency washer, use HE detergent.

Skip the fabric softener. Or at least reduce it. Fabric softener leaves a waxy residue inside your machine. Consider using wool dryer balls instead.

Wipe the gasket after each use. For front-loaders, a quick wipe of the rubber seal after each wash takes 10 seconds and prevents mold from gaining a foothold.

Run a monthly maintenance cycle. Even if you do not do a full deep clean, running an empty hot cycle with vinegar once a month keeps buildup in check.

Signs Your Washing Machine Needs Immediate Cleaning

If you notice any of these, do not wait for your monthly cleaning schedule:

• Musty or sour smell coming from the machine or your clothes
• Visible mold or dark spots on the gasket, drum, or dispenser
• Clothes come out with an odor or dark specks
• The machine takes longer to drain than usual
• Detergent residue visible on clothes after washing

Common Mistakes to Avoid

Using too much vinegar. More is not better. Two cups is plenty for a cleaning cycle. Excessive vinegar can damage rubber seals over time.

Mixing bleach and vinegar. I mentioned this above, but it bears repeating. This combination produces chlorine gas, which is dangerous. Use them in completely separate cycles.

Ignoring the drain filter. Many people clean the drum faithfully but never touch the filter. A clogged filter reduces cleaning performance and can cause drainage problems.

Only cleaning when there is a smell. By the time you smell something, the problem is already significant. Preventive monthly cleaning is much easier than dealing with established mold.

The Bottom Line

Your washing machine works hard for you, but it cannot clean itself. A monthly deep clean takes less than an hour of active effort and keeps your machine running efficiently, your clothes genuinely clean, and your laundry room smelling fresh.

Start today. Pull back that gasket. I know it is intimidating, but you will feel so much better once it is done. And your next load of laundry will actually come out clean, not just wet and redistributed with invisible grime.

Trust me, once you see what has been hiding in your washer, you will never skip cleaning it again.