1 C. Fels-Naptha soap, grated
1/2 C. Borax
1/2 C. Arm & Hammer Washing Soda
Use 1 tablespoon per load, so this recipe makes enough for 32 loads.
It cost me about $1.00 in ingredients to make this, so that works out to be about .03 per load--not too shabby! Even the cheapest detergents you can buy at the store cost at least 3 times that. I'll let you know how it works!