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Unread 02-11-2020, 07:12 PM   #5
cx
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Join Date: Jul 2001
Location: Boerne, Texas
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I've never heard of an alkaline product etching stone.

Seems more likely that something like the 409 cleaner might leave some sort of residue, but I'm not familiar with that being a problem, either.

Perhaps one of our stone gurus will have a clue.
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