How to Sanitize and Disinfect a Washer and Dryer

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  • Total Time: 2 hrs
  • Skill Level: Intermediate
  • Estimated Cost: $20

The condition of your washer and dryer has a significant impact on the cleanliness of your laundry. Routine upkeep typically includes removing the lint after every load, as well as periodic checks and cleanings (at least every few months) of dryer vents. But some situations require more extensive cleaning to ensure that the laundry appliances are sanitary and safe to use. Some situations that should lead you to sanitize your washer and dryer include after washing the clothes of someone who is ill (some pathogens can survive normal washings), as well as after washing clothes contaminated with bodily fluids, poison oak or poison ivy, pesticides, or petroleum chemicals.


If a washer or dryer has been through a flood or fire, have a technician check the electronics of the appliance before cleaning or using it.

What You'll Need

Equipment / Tools

  • Rubber gloves
  • Scrub brush
  • Cleaning cloths
  • Old towels
  • Bucket or other container for mixing


  • Chlorine bleach, pine oil, phenolic disinfectant, or quaternary disinfectant
  • Water


How to Sanitize a Washer With Chlorine Bleach

The buildup of contaminants, residual detergent, and fabric softener can trap bacteria and other debris in a washing machine. This can transfer back to your clothes, causing odor and potentially spreading disease. But you can get rid of it with a special cleaning using chlorine bleach.

  1. Set the Washer Water Temperature

    Set the water temperature for the washer to the hottest setting. Be sure the washer is empty.

  2. Add Chlorine Bleach

    Add 1 cup of chlorine bleach to the empty washer drum (both front-load and top-load models). Do not add any clothes.

  3. Set the Washer Cycle

    Set the washer to a full cycle with hot water rinse if available. Allow it to run through the entire cycle.

  4. Scrub the Interior Components

    When the cycle is complete, inspect the interior of the washer. Carefully check the rubber seals and gaskets and the inside of the appliance door or lid for signs of residue buildup or mold. Also, check any detergent or fabric softener dispensers. Mix a solution of 1/4 cup chlorine bleach and 1 quart of water. Dip a cloth or soft-bristled brush in the solution, and scrub these areas to remove any buildup.

  5. Do a Final Rinse

    Set the washer to the rinse/spin cycle, and allow it to run to ensure all of the bleach is removed before doing a load of laundry.

  6. Clean the Exterior of the Washer

    Finally, clean the exterior of the washer—top, front, and sides—by wiping it down with a solution of chlorine bleach and hot water. Rinse with clean water, and dry with a soft cloth.

How to Sanitize a Washer Without Chlorine Bleach

If you don't want to use chlorine bleach, you can use pine oil, phenolic disinfectants, or quaternary disinfectants to clean your washer. Note that oxygen-based bleaches do not provide disinfectant qualities. Pay attention to the usage directions on product labels, and follow the same steps for cleaning with chlorine bleach as listed above.


Choose one method of cleaning and disinfecting a washer and dryer. Never mix cleaning chemicals.

How to Sanitize a Dryer

If contaminated laundry has been placed in a clothes dryer on the low heat or air-only cycle, there is the possibility of cross-contamination with the next load of laundry. Plus, if certain chemicals or petroleum products were involved, there is even the possibility of fire. The dryer should be thoroughly cleaned and disinfected.

  1. Remove Lint From the Dryer Screen

    Wearing gloves, remove any lint from the lint screen, and safely dispose of it. The lint can be contaminated and cause skin irritation, among other issues.

  2. Mix a Cleaning Solution

    To clean a dryer drum, mix a solution of 1/4 cup of chlorine bleach and 1 quart of water. If you don't wish to use chlorine bleach, mix a solution of pine oil, phenolic disinfectant, or quaternary disinfectant, following label instructions.

  3. Wipe Down the Interior Dryer Drum

    Dip a cloth or soft-bristled scrub brush into your cleaning solution. Then, wipe the entire surface of the dryer drum, the rubber seals and gaskets, and the interior of the dryer door.

  4. Rinse the Interior Drum

    It is very important to rinse all surfaces with a clean cloth dipped in plain water. Then, toss in a few old towels or rags, set the dryer to high, and allow it to run for 10 minutes to remove any residual cleaning solution.

  5. Clean the Exterior of the Dryer

    Finally, wipe down the outside of the dryer with your cleaning solution, and rinse well with a cloth dipped in clean water.