How do I clean a permanent stain on a granite tile floor?

I have a hard floor machine cleaner that vacuums and then you flip it and it cleans with water and solution for the floor. I turned off the unit and left the hard floor machine on the granite floor for about 5 minutes and I forgot to wipe off the water from where I left the unit so after time the water dried up. Now there’s a small mark about 8 inches long by 2 inches wife that I cannot seem to clean off the granite. What else can I try?
i didn’t mean permanent, but a dried up water/floor solution stain

2 COMMENTS

  1. kind of a trick question isn’t it? a permanent stain is…. permanent….

    Any way, Bed Bath and Beyond has a product call the "Granite Stone and Tile Floor Cleaner" it has worked very well on the marble in our bathroom.

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