When I moved into this townhouse the dishwasher had stains from the water. We live near the Iron Range in Minnesota so hard water deposits and some rust can stain. So the dishwasher was stained from the water. My mom gave me this jar of Citric Acid powder and told me to fill the soap dispenser inside with it and run it empty through a cycle. It made the dishwasher spotless!! It looks like new! Now, I'm not sure where people could find this. I think my father or brother got it from the pharmacy where they work. It's not a prescription thing so they may be willing to sell a bottle if you asked at the pharmacy window. So ugly stains in the dishwasher? Here's your fix!