How To Make Homemade Dishwasher Detergent (That Actually ...
To prepare your dishwasher, place 1/4- 1/2 cup citric acid in the bottom of your empty dishwasher and start a cycle. Allow it to run for 3-5 minutes and then turn the dishwasher off. Let the water/citric acid solution soak for 3-4 hours and then allow the cycle to complete.