Ingredients:
1 Bar of Fels Naptha soap, grated (I found this soap at Kroger and Publix... around $2.50 each bar at Kroger and $0.99 at Publix. Look on the laundry aisle at a major chain grocery store... either at the top or bottom of the shelves since it's not a common item. This is a laundry soap - you can also use Ivory soap but the Fels Naptha cleans better. I grate it with a cheese grater.)
1 cup Borax (Also found on the laundry aisle. Box of powder.)
1/2 cup Laundry Soda (Again... the laundry aisle. Laundry soda is like baking soda, just stronger. I have the "Arm & Hammer" brand... yellow box.)
5 gallon bucket
Hot water
Put grated soap in a saucepan with just enough water to cover it well on the stove on medium heat. Stay with it to keep it from boiling over but heat it long enough to have no chunks of soap left.
Put Borax and Laundry soda in the five gallon bucket. Pour melted soap mixture into bucket. Add hot water until near the top of the bucket. (Stir before water gets to top so not to splash everywhere but make sure all ingredients are mixed.)
Stir the next day. It should be the consistency of jell-o.
Use 1/2 cup per load. If you have an HE machine, use about 1/3 cup per load.
That's it!
My next endeavor... dishwasher detergent. Hmmm...