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Wand marks on porcelain toilets, bathtubs, ceramic tile. If you have done this, and could not figure out the answer, here it is. I hope this helps the puzzle somewhat. When a cleaning wand makes a mark onto a bathtub that is next to the carpet, or onto a toilet, and will not readily wipe off, The mark is not scrached into the porcelain, and since the stainless steel of the wand will not mark anything, The mark is made off the weld of the vacuum orifice, at the corners. The welding steel is not the same stainless steel as the wand. It can rust, and corrode at the edges, and will rub off onto certain surfaces, leaving a black mark. In many cases, the black mark will not clean off with a damp rag, because it is actually a form of rust. To remove this rust mark, a mild acid is needed. Do not apply rust remover, because the strong acids in rust remover, especially Hydrofluoric acid will etch the porcelain. Use Tannin Stain Remover, such as Ramsey brand, or other similar brands. The mild acids found in these types of products will successfully remove these black smudges in a few seconds. Apply the Tannin Stain Remover to a towel, apply this to the scratches, and they will disappear before your eyes. |