In our house we use the following recipe:
1 cup Arm and Hammer Washing Soda
1 cup Borax
1 cup oxygenated bleach
1 bar Fals-Naptha
1/2 cup Epson salt with 20 drops favorite essential oil (or Purex scent crystals are 98% natural for everyone who isn't so die hard about the natural.)
I grate the bar of soap the old fashioned way on our cheese grater, but I know plenty of people who use their food processors as a short cut. Then mix everything together and store in an air tight container, as to not let moisture in. I use about 2 tbs per large load (we only run our washing machine on the heaviest setting full to the top to save energy and save a little off our electric bill), 1 tbs for medium loads, 1/2 tbs for small loads.
|I was semi-weirded out by the fact it looks like soap smelling cheese with powder but I am now in love.|
I find our clothes take less time to dry (we line dry/hang to dry), and if dried in the dryer produce less lint. I think they smell clean and not necessarily "perfumey."
If you are trying to go green, this was our first step!