Tested: How to Get Mold Out of Dishwasher Fast (2026)

By Tom Bradley · January 3, 2026

Immediate Action (First 5 Minutes)

Opening your dishwasher to unload clean plates, only to be hit with a damp, earthy smell, is a terrible way to start the morning. I've dealt with this exact issue in my own kitchen after leaving the machine closed over a humid three-day weekend. Black or pink mold loves the dark, moist environment inside your appliance. If you spot fuzzy patches on the rubber door seal or dark sludge near the drain, you need to act fast.

First, pull out both the upper and lower dish racks. Set them on your counter. Next, grab a damp paper towel and wipe away any loose food debris from the bottom basin. Don't scrub the mold yet. You just want to remove large chunks of food so they don't clog your drain during the cleaning cycles. Check the spray arms for trapped seeds or corn kernels. Use a wooden toothpick to poke them out. This five-minute triage stops the mold from spreading further while you gather your supplies.

What You'll Need (Tools & Products)

I'll be honest, getting rid of stubborn fungal growth takes a bit of elbow grease and the right supplies. You don't need to spend a fortune, but cheap knock-off cleaners often leave a chemical residue on your dishes. Here is my exact toolkit for tackling this job effectively.

Distilled White Vinegar: A standard 1-gallon jug from Heinz costs about $4-6. You need the 5% acidity version for proper descaling.
Baking Soda: Arm & Hammer makes a reliable 4-pound box for around $5. It acts as a gentle abrasive and deodorizer.
Old Toothbrush: A soft-bristled brush works best for tight rubber gasket folds without tearing the material.
Microfiber Cloths: Grab a pack of Amazon Basics cloths (around $15 for 24). They trap spores much better than paper towels.
Dishwasher Cleaner (Optional): Affresh tablets run about $9-12 for a 6-pack if you prefer a commercial route.
Rubber Gloves: Mold spores can irritate your skin. Grab a pair of Playtex Reusable Gloves ($4) to protect your hands.

Cleaner Type	Best For	Average Cost	Safety Note
White Vinegar	Mineral deposits & light mold	$4 - $6	Safe for all interiors
Bleach Solution	Severe black mold	$3 - $5	Plastic tubs ONLY
Citric Acid	Hard water scale & odor	$6 - $8	Safe for all interiors

Step-by-Step Removal

Step 1: Deep Clean the Filter Assembly

Most modern dishwashers, like the Bosch 800 Series or KitchenAid models, have a manual filter at the bottom. Twist the cylindrical mesh filter counterclockwise and lift it out. I usually find a disgusting layer of gray sludge trapped underneath. Wash the filter in your sink using hot water (around 120°F) and Dawn dish soap. Scrub the mesh with your toothbrush until the water runs completely clear. Let it air dry on a towel while you move to the next step.

Step 2: Sanitize the Rubber Door Gasket

This is where mold loves to hide. The accordion-style folds on the door seal trap moisture and food particles. Dip your microfiber cloth in undiluted white vinegar. Wipe down the entire perimeter of the door. Use your toothbrush to dig into the deep crevices of the rubber. If you see black spots that won't budge, make a thick paste of baking soda and water. Apply it to the mold, let it sit for 15 minutes, then scrub again. Don't forget to wipe the door latch mechanism, as gunk builds up there too.

Step 3: Run a Hot Vinegar Wash

Place a dishwasher-safe bowl filled with 2 cups of white vinegar on the top rack. Make sure the bowl is upright so the vinegar doesn't spill immediately. Run your dishwasher on the heaviest, hottest cycle available. Most machines have a 'Sanitize' or 'Pots and Pans' setting that heats the water to 140°F or 150°F. The acidic steam will break down mineral deposits and kill lingering mold spores inside the spray arms. Do not add any detergent to this cycle.

Step 4: The Baking Soda Deodorize

Once the vinegar cycle finishes, open the door and let the interior cool for about 10 minutes. Sprinkle 1 cup of baking soda evenly across the bottom of the dishwasher tub. Close the door and run a short, hot water cycle (usually the 'Rinse' or 'Express' setting, which takes about 30 minutes). The baking soda neutralizes the vinegar smell and lifts any remaining stains from the plastic or stainless steel walls.

Step 5: Wipe and Reassemble

When the final cycle ends, open the door immediately to let the steam escape. Take a dry microfiber cloth and wipe down the inside of the door, the handle, and the control panel. Reinstall your clean filter by twisting it clockwise until it clicks securely into place. Slide the dish racks back in. Your machine should now smell completely neutral and look brand new.

Alternative Methods

Sometimes vinegar and baking soda just don't cut it. If you are dealing with a severe black mold infestation that has been growing for months, you might need heavier artillery. Here are two backup methods I've tested when the DIY route fails.

Method 1: Diluted Bleach Solution (Plastic Interiors Only)

I cannot stress this enough: never use bleach in a dishwasher with a stainless steel interior. Bleach reacts with stainless steel and causes permanent pitting and rust. If your machine has a plastic tub, mix 1/2 cup of standard Clorox bleach with 1 gallon of cool water. Wear your gloves and wipe down the interior walls and gaskets. Let it sit for 10 minutes, then run a complete rinse cycle with no dishes inside.

Method 2: Citric Acid Treatment

Lemi Shine Original makes a fantastic citric acid-based cleaner that costs about $6-8 per bottle. Citric acid is highly effective at breaking down hard water scale that mold uses as a hiding place. Pour the recommended amount (usually 2 tablespoons) into your detergent dispenser. Run a normal wash cycle on the hottest setting. This method leaves a pleasant citrus scent and is completely safe for stainless steel tubs.

Prevention Tips

Keeping mold away is much easier than scrubbing it out. After hosting a massive Thanksgiving dinner party, it's tempting to just shut the dishwasher door and go to sleep. Don't do it. Follow these habits to keep your appliance fresh.

Crack the Door: Leave the dishwasher door open about 2 inches after every cycle. This allows the interior to dry completely and starves mold of the moisture it needs to grow.
Scrape, Don't Rinse: Modern enzymes in detergents like Cascade Platinum need food soil to activate. Rinsing plates completely clean actually reduces washing efficiency. Just scrape large chunks into the trash.
Check Your Water Softener: If you live in an area with hard water, ensure your dishwasher's built-in water softener is filled with regeneration salt. Soft water prevents scale buildup, which traps mold.
Monthly Maintenance: Run an empty hot cycle with a commercial cleaner or vinegar on the first day of every month. Set a recurring reminder on your phone so you don't forget.
Inspect the Drain Hose: Ensure your drain hose has a high loop under the sink. This prevents dirty sink water from backflowing into the dishwasher and introducing new bacteria.

FAQ

Can mold in my dishwasher make me sick?

Yes, exposure to black mold spores can trigger allergic reactions, asthma attacks, and respiratory irritation. If you notice a persistent musty smell or visible fuzzy growth, stop using the appliance immediately. Running a thorough sanitizing cycle will kill the spores and make your dishes safe to use again.

Why does my dishwasher smell like mildew even after cleaning?

A lingering mildew odor usually means food particles are trapped in the drain hose or the garbage disposal connection. Check the air gap on your sink or the high-loop drain installation under your counter. If dirty water is backflowing into the machine, you will need to clear the plumbing blockage to fix the smell permanently.

Is it safe to mix vinegar and bleach to clean the dishwasher?

Absolutely not, as mixing vinegar and bleach creates toxic chlorine gas that is extremely dangerous to inhale. Always choose one cleaning agent and run a complete rinse cycle before switching to a different chemical. Stick to either the acidic vinegar method or the alkaline bleach method, but never combine them in the same wash.

How often should I clean the dishwasher filter?

You should remove and hand-wash the manual filter at least once a month if you use the machine daily. If you frequently wash dishes with heavy food residue or starchy sauces, check the filter every two weeks. A clogged filter restricts water flow and creates the perfect damp breeding ground for mold and bacteria.