The owner's manual of my 2010 Frigidaire says to use bleach for the cleaning cycle. I've used Tide Washing Machine cleaner, but I don't know that it really does anything more than leave a heavy, flowery scent behind.
I use liquid chlorine bleach in at least three loads a week, and I always pat the boot dry, wipe down the window and wipe out the dispenser drawer at the end of wash day. I leave both the door and the dispenser open when the machine is not in use. Have never had a problem with mold, mildew, smells, etc.