How to make powder laundry detergent

from" http://themarathonmom.com/how-to-make-laundry-detergent-powder.htm
Ingredients:

• 1 bar Fels-Naptha
• 1 cup Borax
• 1 cup Allens Naturally Laundry Powder***
• 2 cups Arm & Hammer Super Washing Soda

To make:

1. Cut into fourths, then grate Fels Naptha soap using cheese grater or food processor.
2. Once grated, change to blade in food processor.  Swirl this around in food processor til it is as fine as you can get it.  (I tried skipping step one, and had to go back and start over, because the pieces were just too big.  Grating first is a must!)
3. Add the Borax and pulse til mixed.
4. Add the Allen’s laundry powder, and then the washing soda, pulsing several times after each cup is added.
5. Mix thoroughly.
6. Store in an airtight jar with lid.  (Be sure to label so that your kids don’t think it’s lemonade mix!)
7. Use one to two tablespoons per load (depending on grit and grime, of course!)  I threw in an old scoop from one of the boxes of powder I had.

***If you are not able to find this laundry powder, don’t fret.  I replaced a second cup of borax with that.  I personally don’t think there needs to be that much Borax in the recipe.  If you do not have Allens, you could use a half cup of Borax and another half cup of washing soda and be just fine.