So easy and saves me oodles. Last week I did the math and this soap costs less than two cents a load. I use the kitty litter bucket when I double the recipe. 2 gal. water 1/3 bar of Fels Naptha -- finely grated 1/2 c. borax 1/2 c. Washing Soda (NOT baking soda) Bring 1 gallon of water to boil, toss in grated soap. Stir and continue boil until fels naptha is completely melted. Take off heat and add borax and washing soda. Stir. Add 1 gallon of water. Stir. Done. If I'm storing my laundry soap in plastic milk jugs, I wait until the soap as cooled. The soap will "gel up" over night. Stir before each use. 1/4-1/2 c. per load. This is a low suds soap so it is HE friendly! I started making my own laundry soap not only to save money but also because I could. :) I started to look at products that I used/consumed and asked myself, "Can I make that?" It's amazing the stuff I've learned over the past couple of years just because I asked this sim...