the area is outside, about 100 sqft and I have tried just about every form of acid or flouride cleaner, and even mold cleaners. What seemed to work the best are the acids, but they just etch off what is on the surface and whats in the picture is what is left over. Also tried grinding but to no avail. The only thing I can think of trying next is some form of poultice.<div>
<br></div><div>Any ideas?</div><div><br></div><div>thanks<br><br><div class="gmail_quote">On Thu, Sep 23, 2010 at 2:21 PM,  <span dir="ltr">&lt;<a target="_top" href="mailto:info@restoreyourtiles.com">info@restoreyourtiles.com</a>&gt;</span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex;"><div class="im">You need to include more info like is this inside or outside, how big is the stained area, possible orgin etc...<br>

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-----Original Message-----<br>
From: Greg Cook &lt;<a target="_top" href="mailto:info@surfaceshawaii.com">info@surfaceshawaii.com</a>&gt;<br>
Date: Thu, 23 Sep 2010 11:29:00<br>
To: Restoration and Maintenance&lt;<a target="_top" href="mailto:sccpartners@stoneandtilepros.com">sccpartners@stoneandtilepros.com</a>&gt;<br>
Reply-To:&quot;Restoration and Maintenance&quot; &lt;<a target="_top" href="mailto:sccpartners@stoneandtilepros.com">sccpartners@stoneandtilepros.com</a>&gt;<br>
Subject: [sccpartners] Dark brown stains on limestone<br>
<br>
</div><div><div></div><div class="h5">Does anyone know if these stains can be removed?<br>
<br>
Kindly,<br>
Greg Cook<br>
<a target="_top" href="http://surfaceshawaii.com" target="_blank">surfaceshawaii.com</a><br>
808.891.1963<br>
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</div></div></blockquote></div><br><br clear="all"><br>-- <br><div><font face="verdana, sans-serif"><span style="font-size:large"><font color="#333333">Greg Cook</font></span></font></div><div><font face="verdana, sans-serif"><span style="font-size:large"><font color="#333333">Surface Solutions Inc.</font></span></font></div>
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