The answer to 'why is my tile stained' is that there are several common causes, including spills, hard water buildup, grout discoloration, and improper cleaning. Tile stains can be caused by food, drinks, oils, and other substances that seep into the porous surface of the tile or grout. Hard water can also leave mineral deposits that create unsightly stains. Over time, grout can become discolored and lead to tile staining as well.
In many cases, tile stains can be removed through proper cleaning and maintenance. For minor stains, you may be able to DIY with a tile cleaner or a mixture of warm water and mild detergent. However, for more stubborn stains or widespread discoloration, it's best to call in a professional tile cleaning service. They have the right tools and techniques to safely and effectively remove stains without damaging the tile or grout.