YUP! That's the way to do it. You can reuse the stuff for a LONG time, too, if you keep it clean. When it becomes dirty, it smells awful, so clean everything well before sanitizing.
I've used it to sanitize cheese cloth and it works well. I believe.
It's well worth the price. I've got one bottle which is half used, 32 oz bottle I believe, and after 50 5 gallon brewings and some cheese work I've barely scratched off $9 of expense to safely sanitize. Incredible.
