4 cgrated Castile Soap 2 c Washing Soda 2 c Borax 2 c baking soda 1 l vinegar, white 2 T Fragrance oil (optional)
Grate soap. Allow to dry a few days to help it last longer.
Add dry ingredients and mix well. Use 2 Tablespoons to 1/4 cup (adjust if needed) per load of clothes. Add oil if desired and mix well.
Use 1/4 cup of vinegar in rinse cycle if desired.