Pour equal parts of Dr. Bronner's Castile soap, water and vinegar in a bowl.
Add 1 teaspoon of lemon juice to the bowl for each 1/2 cup of Castile soap used.
Stir the mixture well and pour it into a clean squeeze bottle.
Squirt 2 tablespoons of the mixture into the detergent dispenser before running a dishwasher cycle.
Fill the rinse dispenser with white vinegar for the rinse agent instead of using a commercial, chemical-based product.