Pumie, the original gray pumice cleaner, removes toilet and urinal stains from rust and hardwater upon contact. May also be used on porcelain sinks, ceramic tiles and grout. Works faster and better than chemicals and cleansers. Non-toxic and safe in all working environments. Scouring Pads/Sticks Type: Stick; Material(s): Pumice; Size (W x L): 1 1/4 in x 5 in; Color(s): Gray.