As a professional brewer I use caustic and acid on the job to clean my equipment. Honestly, they work well and they’re cheap. But when I’m at home, and I do still brew at home, I don’t like to work with those types of hazardous materials. As a result, I prefer to use Straight-A and One Step in my own brewing operation. The products are easy to use and extremely effective. The fact that they are also environmentally friendly doesn’t hurt a bit.