Spartan Chemical Company Inc. announces Between the Lines grout sealer for ceramic, porcelain and natural stone tile surfaces. Grout is a porous material that will soak up spills, dirt or other soils. The water-based formula makes daily cleaning and sanitizing easier, keeping grout looking bright and new. Between the Lines is perfect for areas where organic spills and splashes are common. Easily applied, the sealer provides a protective barrier for upwards of six months.