HG natural stone headstone cleaning spray 500mlHG headstone cleaning spray removes deposits, dirt, and marks whether they are caused by weather influences or by birds easily and thoroughly from marble, blue limestone, and other natural stone headstones, plasterwork, or walls. Spray the dirty marks from approximately 5 cm with HG headstone cleaning spray and leave product for approximately 25 minutes. Remove any remaining dirt with a cloth or a brush, and rinse the surface with plenty of water.