All this came from the Duggars. My brother told me about it because he started using it and likes it.
Here's the recipe and directions:
Ingredients:
1 bar of Fels-Naptha soap (Ivory works too)
4 C hot tap water
1 C washing soda (can be found at Kroger)
1/2 C borax (in the laundry detergent isle on the top)
Equipment needed:
5 gallon bucket w/ lid
cheese grater
long stirring utencil
laundry soap dispensesr
Directions:
Grate soap. 
Add to 6 qt saucepan along with 4 C water and heat over medium heat until the soap is melted/dissolved.
To use:
Fill 1/2 of dispenser full of detergent and 1/2 of hot tap water. Shake before each use.
Top load washer - 1/2 c. per load
Front load washer - 1/4 c per load
I hope this helps ya'll out. Thanks to the Duggars, we can all save money!!!