This appeared on another list that I am on, and I thought I'd send it to this list in the event that someone else might need information on cleaning tombstones.  There are so many do's and even more don'ts that you encounter. Cleaning Basics http://members.aol.com/ctgravenet/dosdonts.htm#CLEANING You might also want to Review this 2nd Site which is not an AOL site http://www.savinggraves.com/cleaning.htm   There are so many neglected tombstones, and with a little care, they will stand longer. Joyce