Empty the washing machine drum
Check the drum for any loose items or debris
Wipe the drum interior with a damp microfiber cloth
Add washing machine cleaner or white vinegar to the drum
Run a hot wash cycle with no laundry
For heavy buildup, add baking soda and run another hot cycle
Clean the rubber door seal with a cloth and mild detergent
Wipe the inside of the door and detergent drawer
Remove and rinse the detergent drawer
Clean the drum filter if your machine has one
Leave the door open after cleaning to let the drum dry