Pumice is a porous igneous rock formed from volcanic eruptions. The sharp, fine grains of pumice are used as an abrasive for cleaning, woodworking and exfoliating. Pumice is a key ingredient in many ...

Q: Hi Ed. My husband and I can't agree about whether to use a smooth pumice stone to remove the mineral deposits ringing the inside of our toilet bowl. He says it can cause a problem by roughing up ...

Question: Hi Ed: My husband and I can't agree about whether to use a smooth pumice stone to remove the mineral deposits ringing the inside of our toilet bowl. He says it can cause a problem by ...