I used hydroforces Peroxiblast. This stuff works pretty good. I used a grout brush to scrub the grout lines and used the tile tool Mikey sent me to clean it. The guy didn't want to seal it because it is a rental. $145 for an hour of work.
thats what I love about my area lots of carpet and tile to clean. I love getting hired to cleam the tile and carpet at the same time!
When tile became a big trend in florida i got worried but it turned out to be a blessing.