I have tile floors thru most of my house. I live in the country and have a large dog, enough said. The best product for cleaning the grout in tile floors is Kaboom. Spray it on and leave it for several minutes, brush and rinse. I do that several times a year. You will be surprised at the color change in your tile and grout. The rest of the time, I use the Swiffer mop, cleans well and dries quickly. Tried the steam mop, didn't work, left water on the floor. Kaboom is the best cleaner that I have found and I have tried a number of them. Smells decent, don't need to wear gloves, works quickly and does the best job.