Averages are for Corvallis Municipal, which is 5 miles from Corvallis.
Warnings. Do not use pumice stones to clean marble, laminate, plastic or fiberglass toilets; doing so will result in permanent scratches. A dry pumice stone will also scratch porcelain, so be sure to keep the stone and the toilet surface wet at all times.lean With a Pumice Stone. Before cleaning a porcelain toilet with a pumice stone, you must thoroughly wet both the stone and the surface to be cleaned and keep the stone and the surface wet as you work.
How to Use a Pumice Stone. Pumice is formed when hot lava mixes with water and hardens, resulting in a porous and abrasive stone perfect for sloughing away dry skin. To use a pumice stone, soften the calloused skin in warm water, wet the stone, then gently rub the stone over the area using circular motions until you remove the dead skin. In addition to its primary purpose exfoliating skin, you can also use pumice to remove hair, remove pills from fabric, and even clean your toilet.