The grout between the tiles in our shower was discolored and the shower in general just didn't look good, and there were some areas where the grout was completely gone. Was considering re-grouting myself, but it sounded like a time-consuming process, so we decided to call Mr. Mignone. For $175, they stripped the old grout, applied new grout with a quick drying product, and cleaned everything up. What a difference it made... they did a fantastic job. You wouldn't believe how much fresh, white grout between your tiles makes your bathroom look brand new. I highly recommend these guys.