Great product, and great service from Jim the owner. Spills on the tile floor clean up easily, with no penetration into the grout. After close to a month now in my new home, the tile shower looks like it hasn't been used. The most impressive part though is the shower glass. I have hard water, and the few spots that dry on the glass wipe down with a clean cloth - its that easy. We had toilets treated as well, and no ring, even with sitting water. Definitely recommend Hydroshield.