I love Grout Kleen! I was nervous to get granite, marble and stone as they are porous. They look beautiful however so I still wanted them when we had our kitchen remodeled last year. It seems everyone was trying to steer us away because these materials need to be sealed once a year. Our builder did not do a thorough job sealing so we found Grout Kleen. They gave me a good price and made me feel assured my natural stone was protected. After one year I am happy to say they protected my floor, back splash and counter tops beautifully. So easy to work with and the owner was wonderful and professional and quick! This year we just had our kitchen re-sealed and the associate who performed the service was professional, thorough and efficient. Water beads up on every surface I am happy to say and I look forward to another year of beauty from my natural stone surfaces thanks to Grout Kleen--eliminate the fuss if you are afraid to seal yourself and hire Grout Kleen!