Haze b Gone is a safe, environmentally friendly and easy-to-use method for removing Portland cement grout haze and mortar residue from ceramic tile, porcelain tile, glass tile and natural stone surfaces. No more harmful acids or other time consuming liquids that require drying before completion. Never has grout haze removal been so easy. Each pad comes with enough activator to do up to 1,000 square feet. Then the pad can be re-used by just re-filling the active ingredient up to 5 times.