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Mold in Dishwashers and Washing Machines: Health Risks

Last updated October 25, 2026

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The short answer

How Mold Affects Your Health

Mold in your dishwasher or washing machine can become a hidden source of indoor air pollution. When the appliance runs, spores can be released into the air and inhaled. For most people, that means minor irritation like sneezing or a scratchy throat. For others, especially those with asthma or allergies, the effects can be more serious.

Prolonged exposure may lead to coughing, wheezing, or worsening respiratory conditions. Some people experience skin irritation after touching moldy surfaces. If you feel unwell and suspect mold is the cause, see a doctor. The key is to catch mold early before it spreads through your home.

  • Run an empty hot water cycle with vinegar or a cleaning product monthly
  • Wipe down door gaskets and detergent drawers weekly
  • Leave the door open between uses to let moisture escape
  • Remove wet laundry promptly to avoid musty odors
  • Check for standing water in bottom of dishwasher or drum

Where Mold Hides in Appliances

Dishwashers often harbor mold in the rubber gasket around the door, the detergent dispenser, and the filter at the bottom. Washing machines, especially front-loaders, can develop mold in the door boot, the detergent drawer, and the drum's crevices. These dark, damp spots are ideal breeding grounds.

If you see black or pinkish spots, that is mold. A musty smell is another sign. Even if you cannot see it, mold can be present in areas you touch regularly. Regular cleaning of these specific spots helps prevent growth and keeps your appliance working efficiently.

Steps to Clean and Prevent Mold

Start by removing visible mold with a cloth and a mild cleaner. For dishwashers, run a cycle with a cup of white vinegar in a dishwasher-safe bowl on the top rack. For washing machines, run a hot water cycle with vinegar or a washing machine cleaner. Always follow the manufacturer's instructions for your appliance.

After cleaning, dry the interior thoroughly. Leave the door open after each use to allow air to circulate. For washing machines, wipe the door seal after every load. These simple habits reduce moisture, which is what mold needs to survive. If mold has soaked into surrounding materials, you may need professional help.

When to Call the Pros

If mold has spread beyond the appliance to walls, floors, or cabinetry, the problem is bigger than a simple wipe-down. Water damage from a leak or overflow can create conditions for mold growth in hidden areas. In that case, you need professional water damage assessment and cleanup.

Local water damage pros can inspect for moisture and mold behind appliances and in walls. They have equipment to dry out structures and remove affected materials safely. If you live in Mesquite, keep in mind that the humid subtropical climate with hot summers and spring hail and thunderstorms can make moisture issues more likely.

  • Visible mold growth on walls or flooring near the appliance
  • Musty smell that persists after cleaning
  • Water stains or warping on nearby cabinetry
  • Leaks from the dishwasher or washing machine
  • Signs of water damage on drywall or baseboards

Protect Your Home and Health

Mold in appliances is preventable with regular care. But if it gets out of hand, it can affect your health and your home's structure. Acting quickly is important. The longer moisture sits, the more likely mold will spread to other areas.

If you suspect water damage or extensive mold, consider a professional inspection. They can identify moisture sources and recommend the right repairs. Your insurance company may help with costs, but policies vary, and your insurer decides what is covered. Taking proactive steps now can save you from bigger problems later.

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Frequently asked questions

Can mold in a dishwasher make you sick?

Yes, mold spores can be inhaled and cause respiratory irritation, especially for people with allergies or asthma. You might experience sneezing, coughing, or itchy eyes. If symptoms persist, see a doctor.

How often should I clean my washing machine to prevent mold?

Run a cleaning cycle with vinegar or a cleaning product once a month. Wipe the door gasket after each load and leave the door open between uses to air out. This routine helps keep mold from taking hold.

What kills mold in a dishwasher?

White vinegar is effective. Place a cup of vinegar in a dishwasher-safe bowl on the top rack and run a hot water cycle. You can also use a commercial dishwasher cleaner. After the cycle, wipe the interior dry.

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