Megabrite ZAP! Professional Tile and Grout Restorer 32oz.Megabrite ZAP! Professional Tile and Grout Restorer is much more powerful than regular cleaners Megabrite ZAP! is a professional restorer designed to return surfaces to like new condition. Save yourself the time, effort, and expense of a costly remodel Megabrite ZAP! is a remodel in a bottle! , ! Ordinary cleaners only work on surface dirt, but Megabrite ZAP! effectively penetrates and dissolves hard water, rust, calcium buildup, limescale, soap scum,