Similar to your carpets and upholstery, your tile and grout lines can be a breeding ground for various disease causing bacteria and viruses. Heavy traffic on your floors equals more dirt and harmful agents to get trapped. Also, routine mopping and scrubbing, while keeping the surface clean, will overtime cause the dirt and grime to be pushed down into your grout lines.
Cleaning tile & grout cleaning will not only clean and extract dirt and grime, but it will also restore your grout and tile color, remove odor and bacteria from your grout lines.