The answer to 'bathroom filthy' is that a bathroom can become filthy for several common reasons, including improper cleaning, hard water buildup, mold and mildew growth, and lack of ventilation. Symptoms may include visible dirt, grime, and stains on surfaces, a musty odor, and even health issues like respiratory problems.
For minor issues, homeowners can often clean the bathroom themselves using the right products and techniques. However, for more severe problems like extensive mold growth or plumbing issues, it's best to call in a professional cleaning service. They have the expertise and equipment to properly diagnose and address the root causes to get your bathroom sparkling clean again.