Originally Posted by Caslon
Keep your present DW deterngent, but maybe try running a cycle empty with Lemi-Shine (or similar DW cleaner) added. Lemi-Shine is available at most supermarkets or Walmart and such places.
Freshness is key for DW soap. I was disappointed with our fairly new DW, did the empty cycle with Lemi-Shine, then a load of dishes with a tab I'd had for awhile. Very puzzled, as they did not come clean. Then I got new DW soap (Finish), and the results were amazing! A plumber friend of ours had told me about the importance of fresh soap, I had forgotten. They should come with a use-by date, but they don't.
I also reversed the Lemi-Shine process, put the Finish tab in the soap container, and the Lemi-shine in the slot next to it. Baked on crud from the previous load that I had to rewash came right off!