Indeed, our Kenmore (Whirlpool-made) agitator top loader was moldy inside, judging from how our stuff smelled when it came out of the washer, and also when it got wet again after being dried. We did warm and hot washes, and didn't skimp on the liquid Tide detergent. In hindsight, I suspect that my use of fabric softener was largely responsible for the problem.

EEeeeeeew! I am appropriately (and sufficiently) grossed out.

My 80-something y/o mother always (always!) left the lid open on the top-load washer. Her reasoning was to prevent a dark, damp environment for mold to grow. I always followed the same practice.