I received a reader question about how to remove the mildew smell from a front loading washing machine. I know that smell and I have a front loading washer as well. I don't know if all front loaders work the same. Mine is a Kenmore. What I do is during the wash cycle, I open the drawer on the top where I put my detergent in. In the same spot where the detergent goes, I add approximately 1/2 cup distilled white vinegar, the cheep stuff you buy by the gallon. I don't measure it, just approximately 1/2 cup. That goes in and mixes with the final rinse. It takes care of the mildew smell and also helps break down soap in the clothes so they can be rinsed cleaner. Don't worry, your clothing WON'T come out smelling like vinegar. They come out smelling fresh.
The second tip is when you are finished washing your clothes, don't close the door to the washing machine tightly. Leave it open a crack to dry out and to prevent the mildew smell from returning. Prevention is the best medicine.
For those of you with top loading washing machines, your lid doesn't seal tightly like the front loaders so most likely you don't have this problem with mildew odors. You can add again about 1/2 cup vinegar to the final rinse. You'll be surprised how fresh your clothes come out.
Hope that helps!