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.
1 A pumice stone is generally to hard on your skin, so it's best to stick to the mitt or your loofah.  Then apply a gradual self-tanner, if you'd like. You know, one of the kinds that is purposefully slow-going. It can help even out what's left of your original experience.