Formula 409 etched our marble
Our cleaning lady unthinkingly squirted 409 cleaner in a swirling, random pattern on our shower floor, which is a mosaic of tumbled Dark Emperador marble. It dulled down the finish and looks sad. It is just abut time for us to re-seal the marble, but first we have to figure out how to revive the floor. We read that baking powder might help, but it did not make matters any better at all.
Any practical fixes? I e-wrote to the company that sold us the material to ask, but they have not responded.