Hello All; I have noticed quite a few grave stones are very hard to read because of the weather deterioration and moss on the lettering. I did have a problem with this until I was advised of how to obtain 100 % readable pictures. I carry a small pocket knife to clean out the moss and a tooth brush to brush it away. Then I use foam shaving cream sprayed on the stone and spread it with a squeegee. This leaves the cream only in the carved lettering and looks like new. Incase your wondering about any damage to the stone, I have checked with two different grave stone carvers who stated that as long as you don't scrape the stone removing the moss and the shaving cream will do no damage (men have used it on their faces for years). To clean stones they use Tide and a bristle brush (not a wire brush). By the way the shaving cream will dry up and disappear. I have also told a few Cemeteries that take pictures upon request and charge a fee, and they are now using this method with great success. Try it and you'll be surprised how great it works. Above for your information................... Loyally, Chuck