But isn't it what the commercial rinse aids the article talks about are made of? Doing stuff by yourself is always interesting, but rince aid is cheap, and acc

But isn't it what the commercial rinse aids the article talks about are made of? Doing stuff by yourself is always interesting, but rince aid is cheap, and according to the article, apparently harmless at the concentrations used in household dishwashers, so unless you want something specific, why bother?