Hi folks,<br><br>I have a customer who has an indoor slate floor (rough) that has residue attached to it when the owner removed a rubber mat.  she was able to scrape off the particles of rubber, but it left stains all over the floor.  any suggestions on what to use to remove the stains without damaging the floor?  photos attached.  all help is appreciated.<br clear="all">
<br>-- <br>Thank You,<br>Barry V Raduta<br>Diamond Stone &amp; Tile Care<br>215-816-7689<br>