1 bar Fels Naptha soap grated very fine. Melt it in a pot of water. (1 qt is enough) Pour this into your 5 gal. bucket. Fill the bucket 1/2 way with very hot water. Add 1 cup Arm and Hammer Washing Soda and 1 cup Borax. Mix very well. Continue mixing while you fill the bucket the rest of the way. I use my immersion stick blender, and get it completely mixed before adding the rest of the water. At that point, you can mix it with a long handled spoon. Let it sit over night, and then use the stick blender to mix it up again. Don't be surprised if the stuff morphs into a solid gel mass. Just mix it up. Shake before every use. After I do the next day mixing, I pour some of it off into large jugs, leaving enough room for shaking. If it gets a bit globby, that's not a problem, it will still work just fine. I use about 1/2 cup in front loader. You might need more for top load, or maybe even less, depending on how hard your water is. It's a low sudsing detergent, so perfect for a front loader. Beware, it's very pungent smelling when you are mixing it up. I melt the soap in the kitchen, then finish the mixing process out on the deck. I was working at 20* last time I made it, and heated the water on the stove b/c I didn't want to use hot tap water that had been sitting in the water tank. Not that that would matter!