cleaning tile without grout damage - alt.home.repair

Message from discussion cleaning tile without grout damage
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From: ron...@gmail.com
Newsgroups: alt.home.repair
Subject: cleaning tile without grout damage
Date: 19 Sep 2006 07:32:32 -0700
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I have a new shower that is tile and the first time I cleaned it with
shower power it removed the grout. Then I had to redo it. What is a
good soap scum remover that won't damage my grout? Have you heard of
this before?