Just combine 1 cup of Borax with 1 cup of washing soda, says dollarstoremom. Add 1 drop of regular dishwasher detergent, or even laundry detergent, before adding to your dishwasher. Bingo bango bongo, you got mad cheap dishwashing detergent in a jiff.
Make Dishwashing Detergent [dollarstoremom]
Make Your Own Laundry Detergent At Home