How do I remove etch marks from a marble shower wall? The maid used an acid cleaner on them and it left some deep marks.

Since the acid has etched the marble, the etching will require honing and polishing to remove. Call in a professional stone specialist, since this work can be quite difficult.

TIP Etch marks caused by acid bathroom cleaner can penetrate very deep in some stone. To remove them may require grinding with a 60 grit diamond. This is very labor intensive and can take a long time to complete. To speed the process equip your hand machine with a 7 or 8 inch drive pad and attach three- three inch diamonds or purchase a larger diamond pad.