Grate the bar of soap by hand, or use an electric vegetable grater. Put these 3 ingredients in a blender to blend. After doing this, it will look just like the store-purchased detergent, but will not include all the “fillers." You will use less product per load and will have fewer “soap bubbles." Remember, just having bubbles doesn’t mean clean. I use 1/2 to 1 teaspoon per load, depending on the size of the load. I have a HE-High Efficiency washer, and it works great in regular washing machines as well. Store the finished product in an airtight container, preferably glass to keep it dry. I store some in 5-gallon buckets, but I don't live where it's humid. Just giving you the heads up.