The answer to 'grout moldy' is that moldy grout is a common problem caused by excess moisture, poor ventilation, or lack of proper cleaning and maintenance. Symptoms include discoloration, staining, and a musty odor. Solutions can range from DIY cleaning to professional mold remediation, depending on the severity of the issue.
For minor mold growth, you can often treat the grout yourself using a specialized grout cleaner or a mixture of warm water and bleach. However, for extensive or recurring mold problems, it's best to call a professional cleaning service or mold remediation specialist. They have the expertise and equipment to properly identify and address the root cause of the mold, preventing future growth.