I'm on a make-it-yourself kick. First, face cleanser, then shampoo/conditioner, then laundry detergent and now dishwasher detergent. I will be building a bunker in the mountains here pretty soon. Anyway, I can't find food-grade citric acid anywhere (well, any citric acid, period). Where does one find it?
(I have no idea if this will work, but it uses almost all the same ingredients as my laundry detergent, so it's very little extra money for me if it doesn't work out.)