Non-abrasive. Designed specifically to be safe on natural stone surfaces; easily removes stuck food particles. Safe for use on stone shower walls and tub surrounds; easily removes water deposits and soap scum without harming the stone surface. Household scrubbing pads should not be used as granite cleaners; they are too abrasive for natural stone surfaces, leaving scratches that require costly repair. Granite Gold is non-scratch and safe on granite, marble, travertine, and all other natural stone. It is great on counters, shower walls, tub surrounds, and floors.