Recipe for liquid laundry detergent

Laundry Soap: (I cut my recipe in half when I made this)

1/2 C. Borox (found by the laundry detergent usually on the top shelf)
1/2 C. Washing Soda (looks like the baking soda box but bigger found same place as Borox. I could only find this at Dillons.)
1/3 bar of Fels-Naptha Soap (I found mine at Harter House)

Directions:

Grate 1/3 bar of Fels-Naptha Soap with carrott grater.
Put grated soap in 2-3 cups of water and boil until soap dissolves.
Pour into a container, add Borox and Washing Soda then add enough water to make 2 gallons.
Shake vigorously to mix well.
Let mixture sit 24 hours before laundering.
Shake everytime before you use it!

This makes 2 gallons of detergent and costs roughly .25 cents per gallon. (I read that somewhere but plan to figure it out for sure later.)
The initial cost of everything is about $4-$5 for the Borox and Washing Soda. The Fels-Naptha soap was $1.99 per bar. So, roughly $12.00 to get started.
The Fels-Naptha soap will make 6 gallons of detergent per bar.
I have no idea how many gallons the Borox and Washing Soda make, but trust me...it's plenty!!!

Let me know if any of you try this out!