Grate a bar of natural soap with a hand-held grater. Pour 2 cups of the grated soap into a large, air-tight plastic container.
Add 1 cup of soda ash and 1 cup of borax powder. Mix the ingredients with a spoon.
Use 2 tablespoons for each full load.
Pour ¼ cup liquid castile soap into an air-tight plastic container.
Stir in 1 cup of soda ash and 1 cup of baking soda. After the powders and soap are thoroughly mixed, add 1 cup of white vinegar and stir again. Continue to stir the mixture until the paste breaks down to a thick powder.
Use ½ cup of this homemade detergent for each full load of laundry.
Pour 6 cups of borax powder into a large air-tight container.
Add 4 cups each of soda ash, baking soda and grated soap flakes. Stir up the ingredients thoroughly.
Add 1/8 cup of the powdered detergent to each full load of laundry.