On that post, a couple of friends commented that they made their own detergent at home. They said that one batch lasts a really long time, and it ends up being around something like .05 a load. Well Suzy Homemaker I am not, but I figured I could probably get a few supplies, dump them in a bucket and stir them around. So I bought what they suggested and also consulted this link.
I finally made time to make it today. The hardest part was grating the Fels-Naptha soap because, even though my mom had let me borrow her food processor and given me the grater addition, I didn't have the thing that hooks the grater to the machine ... anyways, suffice it to say I didn't have what I needed to use the food processor, so I decided to do it by hand. I didn't want to wait another day. I was a gal on a mission. So I grated that dang soap by hand, and it seriously took me about 45 minutes per bar, so ... maybe use your food processor. Haha.
Then I threw the Fels-Naptha into my container, and added the Borax, the Super Washing Soda, the Baking Soda, and the Oxi Clean. Then I stirred it around with a spoon.