Add the washing soda and oxygen-powered bleach to the mixing bowl.
Roughly chop the bar soap, and then add to the food processor. If you don’t have one, finely grate the soap with a cheese grater instead.
Pulse in the food processor until the soap turns into tiny balls.
Add the soap to the powdered mixture, and stir well.
(This step is optional, but I think it makes all the difference!) Add 2 cups at a time of the detergent to the food processor and run on high until the powder is fine and the soap pieces don’t stand out. This finer texture ensures that when you grab a scoop, you're getting an even mix of the ingredients!
As I go through this process, I add the finished detergent to my storage container.
To use this detergent, simply measure 2 tablespoons into your normal detergent dispenser. Feel free to double or triple this recipe!