Just like your washing machine, your dishwasher can do a much better job and last a much longer if you clean it once in a while. To clean your dishwasher, run it empty on the shortest cycle with a cup of baking soda and two cups of white vinegar placed in the bottom. Be sure to use the hottest water setting and run the hot water at the faucet before hand. In about 30 minutes your dishwasher should sparkle like new and smell fresh and clean.
