Things You'll Need
Mold and mildew scrub
Washing machine cleaner
Wipe the inside of the washer and the gasket when the laundry is done. Keep the door ajar and the dispenser lid open between uses.
Front loading washing machines are almost as well known for the mold that settles on the front seal as they are for their energy efficiency and gentle treatment of their loads. Once mold settles on the seal, it's tough but not impossible to remove. Once the rubber gasket on your machine is mildew free, develop cleaning and maintenance habits to keep it that way.
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Put your fingers inside the gap in the rubber gasket and pull forward to make sure there is no debris or bits of wash trapped inside. Scrub the gasket with a household mold and mildew scrub. Pull the drawer to the laundry dispenser open as far as it will go. Look for a tab that releases the dispenser. Push down to release the dispenser completely. Check for mold and mildew. Scrub the dispenser until all soap film and mold are gone. You might need a toothbrush to get into tight areas.
Run a bleach cycle through the machine now that the door and soap dispenser are clean. Pour bleach in all parts of the dispenser and pour 1 to 2 cups in the machine itself. Set the water temperature to hot and use the longest cycle you have. This kills the mold and mildew that is in your dispenser and in basket of the machine.
Run another cycle, using vinegar instead of bleach to deodorize the machine. Run a third cycle of water to flush the machine.
Maintain your machine by using a specially formulated washing machine cleaner every month or every other month. You can also use 1/2 cup of bleach in a normal hot wash cycle. Some machines have a clean or sanitary cycle that should be used with bleach for maintenance.