Powdered Tile Grout is a DIY grout powder. This grout powder is made with sand, clay, and marble dust and is 100% natural. This means that it is completely safe to use in your home or business. This grout powder can be used to cover a multitude of surfaces. You can use it to fill in cracks and crevices, as a floor or wall paint, as a concrete sealer, and even as an underlayment for tile or vinyl.