Mapei UltraCare Keranet is a highly effective, acid-based cleaner in a 1L liquid format designed to remove cementitious grout residues, efflorescence, and lime deposits from ceramic, porcelain, and acid-resistant natural stone surfaces. Its powerful formula is ideal for end-of-installation cleaning, ensuring that excess grout is thoroughly cleared to reveal a pristine finish. The liquid application is suitable for both interior and exterior use, providing a professional-grade solution to restore the appearance of newly tiled areas by dissolving stubborn mineral-based stains without damaging the tile surface itself.