5 Tips to Remove Mold from Dishwasher

Your dishwasher is one of the most used appliances in your home, working hard to clean your dishes day after day. However, many homeowners are surprised to discover mold growing inside their dishwasher. Since dishwashers are warm, damp, and often filled with leftover food particles, they create the perfect environment for mold to thrive. Not only does mold cause unpleasant odors, but it can also pose health risks if left untreated.

If you’ve noticed black, green, or slimy buildup inside your dishwasher, don’t panic. With the right cleaning routine, you can remove mold and keep your dishwasher fresh and safe for daily use. Here are five effective tips to remove mold from your dishwasher.

5 Tips to Remove Mold from Dishwasher

1. Deep Clean the Filter and Drain

The dishwasher filter and drain are prime spots for food debris, grease, and soap scum to accumulate. Over time, this buildup becomes a food source for mold.

Start by removing the bottom rack of your dishwasher to access the filter. Most models have a removable filter that twists or slides out. Rinse it thoroughly with hot, soapy water, and scrub away any visible mold or grime with a small brush or old toothbrush.

Once the filter is clean, check the drain area for clogs or standing water, which can encourage mold growth. Keeping this area clear ensures your dishwasher drains properly and reduces moisture buildup.

2. Run a Vinegar Cleaning Cycle

Vinegar is a natural and effective cleaning solution that kills mold and eliminates odors. To clean your dishwasher, place a cup of white vinegar in a dishwasher-safe container on the top rack. Run a full hot-water cycle without any dishes inside.

The vinegar will circulate throughout the appliance, breaking down grease, soap scum, and mold spores. Not only does this step sanitize the interior, but it also helps remove any lingering musty odors caused by mold.

For best results, repeat this process once a month to prevent mold from returning.

3. Scrub Seals and Rubber Gaskets

Dishwasher door seals and rubber gaskets often trap moisture, creating a hidden breeding ground for mold. These areas are easy to overlook but must be cleaned regularly to prevent mold from spreading.

Mix equal parts vinegar and water in a spray bottle and spritz the rubber seals around the door. Use a soft cloth, sponge, or toothbrush to scrub away mold, paying special attention to corners and folds where moisture hides. For stubborn spots, sprinkle a little baking soda before scrubbing to boost cleaning power.

After cleaning, wipe the seals dry with a towel to prevent leftover moisture from encouraging mold growth.

4. Use Baking Soda for Freshness

Baking soda is another natural mold-fighting solution. After running a vinegar cycle, sprinkle one cup of baking soda across the bottom of the dishwasher and run a short hot-water cycle.

This step helps deodorize the dishwasher, absorb moisture, and scrub away any remaining mold stains. Baking soda is gentle enough not to damage the interior but powerful enough to leave your appliance fresh and clean.

For ongoing freshness, consider leaving a small open box of baking soda nearby (outside of the dishwasher) to absorb excess kitchen humidity.

5. Improve Ventilation and Keep It Dry

Mold thrives in moist, dark environments, which means your dishwasher can quickly become a mold hot spot if it stays wet between cycles. One of the simplest and most effective ways to prevent mold is by allowing your dishwasher to air out after each use.

When you finish a wash cycle, leave the dishwasher door slightly open so that air can circulate and excess moisture can evaporate. Wiping down the interior with a dry cloth every few uses also helps reduce dampness.

If your dishwasher has a sanitize or extra-dry setting, consider using it regularly to kill bacteria and mold spores before they have a chance to grow.

Final Thoughts

Mold in your dishwasher is not only unsightly but can also affect your family’s health if it contaminates dishes and utensils. By cleaning the filter, running vinegar and baking soda cycles, scrubbing seals, and improving ventilation, you can successfully remove mold and prevent it from coming back.

However, if mold continues to appear in your dishwasher—or worse, spreads to other parts of your home—it may be a sign of a bigger moisture or water damage issue. Mold often thrives in hidden areas like behind walls, under flooring, or in basements, and tackling it on your own can be risky.

That’s where professionals come in. At PuroClean of Northeast Tacoma, we specialize in professional mold remediation and property restoration. Our experts use advanced equipment and safe cleaning solutions to eliminate mold at its source, ensuring your home stays healthy and safe.

Don’t let mold take over your home—call us today at (206) 929-0155 for expert mold removal services in Tacoma and the surrounding areas.