Drop an affresh® washing machine cleaner tablet into your washer drum and let it do the work of getting rid of the grime and odor-causing residue that can accumulate in your machine over time.Pour a quart of white vinegar into the wash drum with a cup of baking soda. Use a stiff nylon brush and vinegar to scrub the interior of the wash drum. At the hottest temperature setting, run a wash cycle with this cleaning solution in an empty washer; select the heavy-duty wash cycle if available.