The following do’s and don’ts should help you clean your monuments safely. Always keep this in mind that once a monument is damaged…. it is damaged and there are no do-overs.
DO NOT USE BLEACH, ORANGE CLEANERS, COMET, OR ANY OTHER HOUSEHOLD CLEANERS. DO NOT USE MURATIC ACID FOR MASONRY CLEANING. All of these products may result in ferrous staining (rust) and all result in the deposition of soluble salts.