By jove, I think I may have GOT it. Dishwasher detergent is one of those annoying necessities that I could never quite embrace using. But, I'm finally pleased with the results of two ingredients that seem to be getting my dishes good and clean, minus the chemicals.
I pour regular table salt (or I've also used baking soda) into the detergent openings in the dishwasher door, and then pour about a tablespoon of hydrogen peroxide over the salt until it's a bit sludgy and slushy. Close the door and give it a whirl.
I really want to know what you discover from using this! Do you like it as much as dishwasher detergent? I'm still working on improving this all the time, so please do share if you tweak it and like the results even more.