Yes, you can use OxiClean on brick. Apply OxiClean mixed with water onto the brick surface. Scrub the brick gently using a scrub brush or sponge. Let the solution sit for a few minutes to penetrate the stains. Rinse the brick thoroughly with water until all the OxiClean residue is removed. Allow the brick to air dry. OxiClean is effective in removing dirt, stains and grime from brick surfaces, helping to restore the original appearance. It is important to follow the instructions and test a small, inconspicuous area before applying OxiClean to the entire brick surface to ensure compatibility and avoid potential damage.