Thoroughly mix the borax, washing soda, baking soda, and grated castile soap. Use 1/8 cup per load of laundry! So easy.
(Makes approximately 5 cups)
2 cups (finely) grated castile soap
1 cup borax
1 cup baking soda
1 cup soda ash (washing soda)
Use an 1/8 of a cup per laundry load.