With Memorial Day approaching… many families will be cleaning up their cemetery plot markers. The Fall City Historical Society was recently advised by a King County expert on the cleaning of Civil War monuments (some of the most delicate types of stone) that the best cleaner by far is D/2 Biological Solution. It is available widely, and in smaller spray bottles for limited use. Much background information may be found on the web by clicking here. A video on the cleaning process is available here. Additional cleaning information can be found here

(An often-mentioned alternative is Wet & Forget. However, some experts think that it is more likely to saturate stone in a harmful way.)