How to Clean Your Washing Machine & Remove Mildew Odors

Frequently Asked Questions

Why is my washing machine not draining?

If your washing machine does not drain, it could be due to a clogged hose, blocked pump filter or buildup in the drain line. A washing machine drain blocked by lint, detergent residue or debris is a common reason why a washer would not drain properly.

Why does my washing machine smell like mildew?

A mildew smell from a washing machine is usually caused by moisture, detergent buildup and trapped grime inside the drum, door seals or hoses. Whether it's a smelly washer top loader or you're wondering why your front loader washing machine smells, leaving the door closed between washes and not cleaning regularly can cause a musty odor. To get rid of the smell from the washing machine, it's important to deep clean it and let it dry out properly between loads.

Why does my washer drain smell?

A smell from the washer drain pipe is often caused by a buildup of lint, soap scum, mildew or bacteria inside the drain hose or standpipe. If you're noticing a smell from the washing machine drain or dealing with a smelly washing machine drain, it’s usually a sign that the drain needs to be cleaned and flushed. Regular maintenance can help eliminate the smell coming from the washing machine drain and prevent it from returning.

Why does my washer make my clothes smell?

If your washer makes clothes smell, it’s often due to mold, mildew or detergent buildup trapped inside the drum, seals or detergent tray. When your washing machine makes clothes smell, it usually means the machine needs a thorough cleaning. Regular deep cleaning and leaving the door open between loads can help prevent odors from transferring onto your clothes.

How do I clean my washing machine with Clorox bleach?

To clean your washing machine, start by removing any clothes or items from the drum. For standard washers, pour ½ cup of Clorox™ Disinfecting Bleach into the bleach dispenser or directly into the drum. For high-efficiency (HE) washers, use ¼ cup. Select a hot water cycle—preferably a maintenance cycle if available. If not, choose a cycle with Extra Rinse, such as the Whites or Stain cycle, to ensure the bleach solution circulates for at least 10 minutes. After the cycle finishes, leave the washer door open to air dry, which helps prevent mold and mildew stains buildup. For best results, repeat this cleaning process monthly. Always follow label instructions and never mix bleach with other cleaning products.

Is it safe to use bleach in my washing machine?

Yes, Clorox™ Disinfecting Bleach is safe for use in both standard and high efficiency washing machines when used as directed. The product contains 7.5–7.55% sodium hypochlorite, a disinfectant that effectively kills mold on hard, nonporous surfaces. However, it’s important to use bleach only in the recommended quantities and follow the instructions on the label.

What precautions should I take when using bleach to clean my washing machine?

When using bleach to clean your washing machine, make sure the area is well-ventilated and avoid splashing to prevent skin and eye contact. For individuals with sensitive skin or during prolonged use, wearing rubber gloves is recommended. If bleach does come into contact with your skin or eyes, rinse thoroughly with water and seek medical advice if irritation persists. After cleaning, wash your hands thoroughly with soap and water, and store bleach in a cool, dry place out of reach of children and pets.

What should I do if bleach gets on my skin or in my eyes?

If bleach accidentally gets on your skin, rinse the area with plenty of water for 15–20 minutes and remove any clothing that may have come into contact with it. If you continue to feel irritation, it’s a good idea to check in with a healthcare provider. For eye exposure, gently rinse with clean water for at least 15 minutes, removing contact lenses if needed. If discomfort persists, reach out to a doctor or poison control center for guidance. Having the product label or container nearby can be helpful when seeking advice.

How should I dispose of leftover bleach after cleaning?

For small amounts of leftover bleach, you can safely dispose of it by diluting it with plenty of water and pouring it down an indoor drain, such as a toilet or sink. This method is generally safe for homes connected to municipal sewer systems. And if you have a septic system, it's best to dispose of small amounts gradually over several days to avoid disrupting the system’s balance.

For larger quantities or expired bleach products, take them to a local hazardous waste disposal facility. Never pour bleach into storm drains, onto the ground, or into natural water sources, as it can harm wildlife and contaminate water supplies. Always check your local regulations, as disposal guidelines may vary by region.