Pumie Scouring Stick is a non-toxic cleaning product that cleans where cleansers, chemicals, and scrub pads fail. Family safe abrasive cleaning product quickly removes rust stains, scale, hardwater buildup from porcelain toilets, sinks, tubs, and ceramic tile. Cleans rust from steel, paint from concrete, burned crusted food from grills, and chemical stains/rings from pool. Use with water and gently rub back and forth to remove unwanted deposits.