The answer to 'tile and grout cleaning discolored' is that discolored tile and grout can be caused by a variety of factors, including improper cleaning, mineral buildup, mold or mildew, and general wear and tear over time. Symptoms may include dull, dingy, or stained tile and grout that no longer looks clean and fresh.
In many cases, the discoloration can be addressed through a thorough deep cleaning using the right products and techniques. However, if the discoloration is severe or the result of underlying issues like mold or mildew, it may be best to call in a professional cleaning service to properly assess and treat the problem.