Once I got the stuff home, making the laundry detergent was pretty easy. My plan was to store everything in a reusable Rubbermaid 10-cup container with a lid. So as I went through the steps below, I just dumped the ingredients (shown below) right into this tub.

- 2 parts washing soda (I did this quite literally and started with two cups of washing soda)
- 2 parts Borax (again, the literal approach with two cups)
- 1 part grated or chopped Fels-Naptha soap (I’d read that some people put the soap in a food processor to get it into tiny bits; I just got out my cheese grater and put it to work)
- Mix all ingredients (I put the top on the container and gave it a couple of shakes. I could have stirred it with a spoon)
- Do laundry (I dropped a 1/4 cup measuring spoon into the container for doling out the detergent. Most of the recipes I’d read recommended using anything from 3 tablespoons to 4 tablespoons of detergent in the wash. I figured why not just measure out the 1/4 cup–which equals 4 tatablespoons–and be done with it)
source: suddenly frugal




