Ceramic tile is both beautiful and durable; it can last as long as your home, but it isnt completely maintenance free. Dirt adheres easily to the surface, especially styles with textured surfaces. Eventually this dirt that collects in the tile will dull and discolor it, leaving it looking old and dirty. Tile requires periodic deep cleaning and maintenance to eliminate deeply penetrated dirt and stains.

Ceramic tile grout is much more vulnerable to problems than the tile itself. Unsealed grout is basically sand and a small amount of cement, leaving it susceptible to all sorts of stains. Any spill will be quickly absorbed and can leave behind a permanent stain. Tracked in dirt can also leave behind stains. Bathroom ceramic tile grout, whether on the floor or the walls, is prone to collecting mildew and mold. http://www.deserttileandgrout.com/ceramictiles.asp