Gonna try it again

I keep blathering about making my own stuffs. i do it because A) I want to try and save some cash and B) I want a product easier on the environment. I also want th damn thing to work.
I am going to try the home made dishwasher powder thing again. I have a different recipe this time that uses a wee amount of dishwashing liquid and citric acid in the mix. If this causes a reisdue like the last mixes I made then I will officially give up and pay through the nose for the eco-kindnessy brands.
Here's what i am gonna try:
equal parts washing soda and baking soda
1/2 part borax
1/4 part salt
1/16th part citric acid and also dish soap OR liquid castile soap (which I am
making using this recipe: 1 cup grated castile (or marseilles), 4 cups water, 2 Tbsp glycerine)

Example: 1 cup washing soda, 1 cup baking soda, 1/2 cup borax, 1/4 cup salt, 1 Tbspoon each citric acid and liquid soap(dish liquid or liquid castile).

This is just an example. I actually will probably try it with less citric acid because that stuff ain't cheap and the bottle is small.