While this recipe is similar to a lot of others out there on the internet, the other recipes are done in a very large batch size. I find having a giant container of detergent is impractical and can be initially very expensive to produce even if the finished product is inexpensive compared to other laundry detergents.
Washing Soda, Borax, and Fels-Naptha Heavy Duty Laundry Bar Soap can be found in the laundry section of most hardware stores and grocery stores. I purchased mine at my local King Soopers/Kroger store.
The trick to this mixture is using a kitchen grater to shave the bar soap. The finer the grate, the better the soap distribution.
1 cup Washing Soda
1 cup Baking Soda
1 1/2 cups Borax
1 cup Castile Bar Soap (Dr. Bonner’s) or Fels-Naptha shavings
Combine all the dry ingredients together in a jar that can be closed tightly.
To use, add 2 tablespoons of the detergent mix in with the clothes especially if using a HE washer to ensure that it disperses through the clothes properly. Add white vinegar in lieu of fabric softener to the fabric softener compartment of a HE washer or during the softener stage of the washing cycle.