- Use 2 tablespoons of our Castile Soap for small & medium loads, 4 tablespoons (1/4 cup) for large & extra large loads. Double those amounts if your laundry is heavily soiled.
TIP: If you have especially hard water, add a half cup of baking soda, washing soda, or borax for best results. If using a standard washing machine, add our Castile Soap to the wash basin first, then cover it with the baking soda, washing soda, or borax before starting the water. For mildew, add an additional half cup of borax and wash with hot water on the heaviest setting.