The guy came, told me we had hard water, run two cycles of "Dishwasher Magic" through an empty dishwasher on the longest, hottest cycle, and I'll be set. Oh, and that will be $151. I asked him why the last two guys couldn't have told me the same thing. Apparently because we have hard water, it builds up to the point there is a film inside the dishwasher, the spray arms get clogged, and it continues to get worse and worse in the drain, etc.; hence the reason the dishes were worse coming out than going in. He claims if you run a container of this stuff through every month that it will never build up and dishes will be great. And, most interesting to me, was never to use more than a teaspoon of dishwasher detergent in the dispenser. (This was the only comment all three guys had in common.) So, $22 later for two bottles, I had better have the most immaculate dishwasher in San Diego. You can be sure Sears repair will be getting a letter from me requesting my money back from the first two clowns who came out...and maybe this one too if it's not a success!