With three ingredients, your store bought laundry soap can easily be replaced with a homemade version that will cost you only $.05 per load. And, you can store it in a cute jar with your own hand-written label. I think that's pretty much a win-win.
Ingredients
What you'll need to make your very own Easy Laundry Soap (this makes approx. 48 loads):
1 Bar (14 oz) Fels-Naptha, Zote Soap or Ivory Soap
2 C Arm & Hammer Super Washing Soda (make sure it says "Super Washing Soda")
2 C Borax
Blender/Food Processor
Instructions
Cut the Soap into manageable pieces for the food processor/blender.
Use the finest chopping blade available and grind the soap up, making the pieces as small as possible.
Add the 2 Cups of Arm & Hammer Super Washing Soda to the grated soap.
Next, dump in the 2 Cups of Borax.
Mix everything as much as possible with a wooden spoon.
Transfer the mixture into a cute jar or container.
Use ⅛ Cup of the mixture for normal loads and ¼ Cup for heavily soiled clothes.
Recipe by Potholes & Pantyhose at https://www.potholesandpantyhose.com/2012/03/easy-laundry-soap/