The answer to 'hardwood floor mildew' is that mildew on hardwood floors is a common problem caused by excess moisture, poor ventilation, or high humidity. Symptoms include discoloration, fuzzy white or black growth, and a musty odor. The best solution is to address the underlying moisture issue, thoroughly clean the affected area, and take steps to prevent future mildew growth.
For minor mildew, homeowners can often handle the cleaning themselves using a vinegar-based solution or a commercial mildew remover. However, for more extensive mildew or if the moisture problem is difficult to resolve, it's best to call in a professional hardwood floor cleaning and restoration specialist. They can properly identify and treat the root cause, as well as ensure the floor is fully disinfected and protected.