here are some sites that talk about cleaning headstones. I am sure others here have valuable information on this topic, too. Hope this helps. _www.everlifememorials.com/headstones/cleaning-cemetery-tombstones.htm_ (http://www.everlifememorials.com/headstones/cleaning-cemetery-tombstones.htm) _www.chicora.org/cleaning.htm_ (http://www.chicora.org/cleaning.htm) _www.historictexas.net/cemeteries/1a/cleaning.htm_ (http://www.historictexas.net/cemeteries/1a/cleaning.htm) ************************************** Get a sneak peek of the all-new AOL at http://discover.aol.com/memed/aolcom30tour