Skip the fabric softener in your washing as it might produce residue and use only HE detergents (regular detergents are too sudsy for water-efficient washer and leave behind soap scum build-up
Remove your clean laundry as soon as possible to keep moisture from lingering
Wipe the door and gasket when you are done doing all of your laundry for the day
Leave the door open to let the moisture escape (if you have small children, lock the laundry door or put a gate to deter them.
Remove and clean your detergent drain regularly and let it dry before replacing
Run the sanitary or tub-clean cycle regularly
Make sure your washer is level to avoid improper drainage
Check your drain hose. It should be inserted 6 to 8 inches into drainage pipe. If it is longer there will be the potential for your drain hose to siphon foul-smelling water back into your washing machine