We can buy borax as 20 Mule Team. We can buy sodium bicarbonate as baking soda. We can make sodium carbonate from bicarbonate... so, is there any inexpensive package of a couple of pounds of boric acid?(posted 8448 days ago)I know I can buy a Swan boric acid powder at a drugstore, but I can only find a 4 oz. bottle, and the price is nearly the same as Photographers Formulary.