Mom&#x27;s Super Laundry Sauce Recipe This makes 1/2 Gallon of concentrate ~ ~ Btw, that&#x27;s a full 128 loads of laundry!! ~  1 bar Fels Naptha (Yes, the ENTIRE Bar!) 1 cup 20 Mule Team Borax 1 cup Arm &amp; Hammer Washing Soda (NOT BAKING SODA!!) 4 cups of hot water