Rottenstone, whiting, pumice, volcanic ash, quartz, marble, feldspar, and silica are prime examples of an abrasive. Sandpaper, plastic and nylon meshes, and steel wool are also abrasives. Abrasive materials, particularly calcium carbonate, can be found in scouring powders and pads. In general, the larger the abrasive particles, the harsher the cleaner. Plastic or nylon mesh is the finest abrasive, and the finer an abrasive, the less damage to the surface being cleaned.
Coarse abrasives feel rough and gritty.
Regular use of harsh abrasives on a surface will gradually scratch the finish of sinks, bathtubs, and kitchen appliances. Once the surface is dull and rough, it gets dirtier and stains deeper, and you have to continue using a harsh abrasive to remove imbedded dirt and stain. Coarse abrasives can damage plastic, glass, nonstick surfaces on cookware, painted woodwork, and plated and highly polished metals. Menu Acids Acids are beneficial in removing hard-water deposits, discoloration from aluminum, brass, bronze, and copper and iron rust stains. Strong acids also eat away clothing, leather, skin and some metals.