The Nyco Products Company NL90477-900104 Floor Cleaner is specifically formulated for marble and stone surfaces. While it is a neutral pH cleaner (6.25 to 8.25) that does not contain harsh acids or alkalis, it is not explicitly marketed for use on brick. If you decide to use it on brick, I strongly recommend testing a small, inconspicuous area first to ensure it does not cause any adverse effects.