Prosoco makes a Heavy duty concrete cleaner that wiil remove real bad grout smear. If it isn't that bad you can use one of their other products called  VanaTrol.

Greg Cook
surfaceshawaii.com
808.891.1963

-----Original Message-----

From:  "Majestic Stoneworks" <ray@majesticstoneworksaz.com>
Subj:  [sccpartners] removal of mortar from slate
Date:  Wed Feb 25, 2009 4:02 pm
Size:  1006 bytes
To:  "Restoration and Maintenance" <sccpartners@stoneandtilepros.com>

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