Viper 11 is an alkaline pre-treatment cleaner for stone, man-made ceramic, porcelain and quarry tile. Amazing advances in surfactant technology help Viper 11 melt away grease, stains and soil and do it without the addition of solvents or highly caustic builders. This new high-tech tile and grout cleaning solution was designed to surpass anything currently available! Ideal for use in deep cleaning for restaurants, kitchens, and areas of high traffic. Minimal residue improves bonding and performance of sealers. Also a great maintenance cleaner.