That looks like concrete to me-blue stone isn't affected by acids.
The edges look gray.
Looks man made??

On Mon, Dec 7, 2015 at 2:05 PM, Richard Middleton <> wrote:

Partners I have 20 square feet of blue stone outside on patio. Customer would like light scratches and white residue build up removed. Also need to know proper ongoing maintance.

Thanks Much!

Richard Middleton

ProSteem Carpet Care, Inc

Great American Rug Cleaning Co

Great American Stone Care


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Stu Rosen