AsahiGuard for Stone and Tile is a deterrent to liquid and oil-based stains that can ruin the aesthetics of both porous and non-porous stone and tile. It is effective for polished stones (such as marble and granite), porous stones (limestone) and very porous materials (concrete, terra cotta, brick and paving stones). It is ideal for countertops, shower stalls, flooring, walkways, walls and backsplashes.