Something about tile and grout cleaning in general..

Grout Cleaning and Sealing

We start by coating the entire floor, tile and grout, with our commercial grade low-odor non-toxic chemical that loosens the accumulated dirt, grease, and topical residues from the grout lines and tile surface. After proper dwell time, we work the solution into the grout lines with a stiff brush, as well as on top of the tile surface. Using high pressure hot water, we are able to wash, rinse and extract years of soil and grease from the pores of the tile and grout. You will find that our process restores the grout, in most cases, 85 to 90 percent of its original appearance. Some stains will not come out because they dye the grout, but the combination of heat, water pressure and suction removes most. Once dry, it is time to seal the grout. The sealer will make the grout uniform in color and virtually stain proof.