Did my first slab/countertop today. Easy Peasy. I was going to pass on it because I had never done it before but after researching it (youtube) I took it on and it was super simple. The condition of the concrete is very important in acid staining jacksonville. One thing I was impressed by was that after it had sat a while you have to wash off any excess and after I had done an initial rinse, it was not coming off anymore, and this was after only a couple of hours. Good money-making opportunity. I used Lithochrome