Here's the recipe:
4 Cups - hot tap water
1 Fels-Naptha soap bar (I have heard you can use any kind of bar-soap, but I don't know)
1 Cup Arm & Hammer Super Washing Soda*
½ Cup Borax
Grate bar of soap and add to saucepan with water. Stir continually over medium-low heat until soap dissolves and is melted.
Fill a 5 gallon bucket half full of hot tap water. Add melted soap, washing soda and Borax. Stir well until all powder is dissolved. Fill bucket to top with more hot water. Stir, cover and let sit overnight to thicken.
Stir and fill a used, clean, laundry soap dispenser half full with soap and then fill rest of way with water. Shake before each use. (will gel)
Optional: You can add 10-15 drops of essential oil per 2 gallons. Add once soap has cooled.
-Top Load Machine- 5/8 Cup per load (Approx. 180 loads)
-Front Load Machines- ¼ Cup per load (Approx. 640 loads)
*Arm & Hammer "Super Washing Soda" - in some stores or may be purchased online. Baking Soda will not work, nor will Arm & Hammer Detergent - It must must be sodium carbonate.
I'm grateful there are enough homemakers in Lexington, SC that the WalMart has all three items right next to each other on the shelf. I found this at the Duggar Family Website.