For several months now I have been using a product I too found at Walmart - Lemmi Shine. (I have not looked for it anywhere else yet.) I found it next to the dishwasher detergents. I use it every time I run the dishwasher. The first time I ran the dishwasher empty. Then I use it in my closing detergent cup and regular dishwasher powder in the open cup. It took a couple of washes and now my dishes are coming out cleaner.