To clean your machine, wipe it down first and then I add a little baking soda to the hard to clean spots like the gasket drain and in the detergent drawer. After that, I add in 2 cups of vinegar evenly distributing it between the detergent drawer and front loading area. I am a little bit of a mad scientist and love to watch the bubbles after I add the vinegar. I feel like they are actually scrubbing away the yucky stuff.
It seems to work well to keep the mildew smell at bay. However, I found if I leave the gasket wet too long it is very difficult to get the mold stain out. I have tried bleach too. (Never together with vinegar.) But the stain has not gone away. Stubborn Mother F-er! I WILL find away to get rid of it though. Once I do I will update the post.
Click here to learn more about cleaning your front loading washer.