You will find the Borax and Washing Soda in the laundry aisle. Arm & Hammer also makes large boxes of Baking Soda that may be on the laundry aisle as well. Make sure you get Washing Soda. Also, I use Ivory soap since it does not have any added artificial colors or fragrances.
Here's what you do:
- Add 1/2 to 1 cup each of the Washing Soda and Borax and process until it looks like a powder. I split the difference and use 3/4 cup of each.