J.C.
Depending on how much tile you have you can have it professionally cleaned. We did this when we lived in a house that had lots of tile a few yrs bk b4 we put it up for sale. With only 1 "pretty clean" kid and a dog we were stunned at the amount of dirt and grime that came off the ceramic tile and grout, it was was incredible cleaned and looked brand new. THey used a special floor buffer type machine that sprayed very hot water w/ a cleaning solution. In the 2nd step the guy went bk over the tiles with the machine and it sucked up all the nasty water. Can't remember what we paid 5 yrs ago, to have 2/3 rds of house done, but it was worth it. To think we lived in the house for 7 yrs and I cleaned it with a wet Swiffer Mop weekly, I thought it looked pretty clean except for the grout. The tile looked awesome and house sold fast. Hope this helps.