haha I SOOOOO want mine done too. My grout was not sealed by the previous owners and I didnt figure this out until I saw the grout getting gross. I think I may have a solution tho to cleaning it. I clean my stainless steel fridge with vinegar (I clean most the house with it) and I guess it dripped on the grout and I didnt wipe it. Guess where the grout is pretty again?! I am thinking of just using a squirt bottle to soak sections at a time and clean that way. Also vinegar and water is the best floor cleaner I have found yet! Like 1 cup to 2 gallons of water.