Laundry detergent can be made out of some very basic cleaning products. It’s easy, inexpense, eco-friendly and toxin-free. This very basic DIY recipe for Laundry Detergent is: 1/3 cup Soap Flakes or shave a pure soap such as Castile Bar Soap 1/4 cup Baking Soda 1/2 cup Washing Soda 1/2 cup Borax