Whirlpool recommends the following:

Fill a two cup measuring cup with vinegar and put it (face up,
obviously, so it doesn't spill) on the lower rack.

Run the dishwasher on the normal cycle, air dry, with no dishes and no
detergent.

The vinegar helps clean out the gunk-- and the water dripping into the
cup will overflow and thus slowly release the vinegar into the
dishwasher.

They say don't do this too often (no more than a couple of times a
year) because the vinegar is a bit caustic for the components.

I did this and it helped a lot.

Shaun Eli
www.BrainChampagne.com
Brain Champagne: Clever Comedy for Smart Minds (sm)
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