The grout between those tiles can be a completely different story though and the
look of even the most sparklingly clean ceramic tile floor can be ruined by the appearance of dirty, grungy grout.
Grout is a concrete based material so it is porous, making it neither waterproof nor all that stain resistant. The grout used in some newer tiling installations is now often sealed with a protective barrier to resist dirt and staining, but even that wears away after a few years. The basic fact is that sooner or later you are going to have to tackle the tricky task of cleaning the grime of your grout.
If you have a large tiled area such as a kitchen or bathroom floor, you will really benefit from calling in the professionals a couple of times a year as these are the guys and/or gals with the right heavy duty tools to get all kinds of grout absolutely clean.
Many professionals use industrial grade steam cleaners, which not only remove all the dirt and spilled cooking oil, pasta sauce or hair gel and soap scum from your ceramic tile but mold and mildew as well, helping make your home a healthier place to be.
For light touch up between professional cleaning, the old fashioned scrubbing with a toothbrush is still one of the best answers for homeowners. However, be careful what you use on that toothbrush as some harsh cleaners can eat into the grout and weaken it. When you have your ceramic tile cleaned professionally ask the crew before they leave what they would recommend for everyday use on your particular type of tile.