Miracle Sealants Water Ring & Etch Remove is a unique, fast acting polishing powder specially formulated to remove water rings, light scratches and etch marks. Unique polishing compound for maintaining: Marble, Travertine, Terrazzo, Limestone and Other Natural Stone. Coverage will vary depending on density, porosity, texture, surface absorption, weather, time solution is left on the surface and application methods. Used as directed, Water Ring & Etch Remover will cover approximately 37.5 - 75 square feet per 4-ounce container.