This was a pintrest find, and another success! My three jars are above, and I plan to make a double batch soon and see how long that lasts me. Apparently these are good essentially forever.
This concentrated recipe requires only one tablespoon per load, and costs about 1.7 cents per load.
2 bars Fels Naptha (or 6 to make enough for 12 jars)
2 cups 20 Mule Team Borax (or the entire box for 12 jars)
2 cups Arm & Hammer Washing Soda (or the entire box for 12 jars)
6 cups of hot water (18 cups of water)
(12 quarts of concentrate decreases cost to 1.7 cents per load and would wash 14 loads a week for a year)
Put 6 cups of water on to heat. Grate the Fels Naptha. Mike uses the food processor, but has done this many times by hand. Add the soap to the water and stir frequently. This part takes 10 to 15 minutes. Keep stirring until the soap is completely melted. Don't boil.
When the soap has melted, turn off the heat and add the Borax and Washing Soda. (Washing soda is not the same as baking soda.) Stir and stir and stir for a few minutes. The powders will dissolve into the liquid.
Pour the liquid equally into 4 quart jars, then add enough water to bring the contents up to the "shoulders" of the jar. This will leave about 1 1/2 inches headspace. Put the lids on the jars and let them sit overnight (8 hours). The soap will separate while standing. Sometimes crystals will form in the gel-like soap on the bottom. Don't worry.
This next part is quite fun. Take one of the jars and cut up the foam with a long knife, like a pie. Dump this into a blender. You may have to break up the crystals at the bottom to release them from the jar. Add them to the blender. Hot water may help break them up too.
Start on the lowest speed and increase gradually. My blender easily handled two jars. The result will be really thick foam, like whipped cream. Scrape down the sides if necessary to get it all blended. Pour/spoon the blended soap back into the quart jars, apply like and it should keep indefinitely. It gets firmer with sitting apparently, but always spoonable.
We also bought wool balls this year and have been using them in place of dryer sheets with great success. It is funny to skip that entire isle at Wal-mart, particularly because I know it saves me about $15 a trip.