Thanks for all of your responses. I've tried white vinegar before and it helped, but my
dishes still weren't as clean. Then, I recently read about someone who cleaned their d-washer thoroughly by taking off the screws in the washer and cleaning the various compartments out. I did so and was surprised to see the filth that and mold that was on each compartment. Soaked everything in bleach, soap and water for hours, then scrubbed and scrubbed. Then put on rinse to make sure all cleaning residue was gone. I guess it costs about $150 for a pro to do this and many people don't realize that this needs to be done on a regular/yearly (?) basis. Helped a lot. And thanks a lot for the replies. I'll continue to use vinegar regularly to avoid dirty deposits.