Whoa!
This looks like something worth trying out! She was able to make a 5 gallon bucket of laundry detergent (yield 75 cups, and you use 1/2-1 cup per load) for....
$2!!! Awesome! That's got to be cheaper than Costco. And, she said it is safe to use in HE washers as well, which is good because that's what we have.