The answer to 'window mildew' is that it is a common problem caused by excess moisture, poor ventilation, and inadequate cleaning. Mildew appears as a black, gray, or green fuzzy growth on window surfaces and can lead to discoloration, staining, and potential health issues if left untreated.
To address window mildew, start by identifying and addressing the root cause. Improve ventilation, reduce humidity levels, and clean the affected areas regularly using a mild detergent or a diluted bleach solution. For stubborn cases or if the mildew has spread significantly, it's best to call a professional cleaning service that specializes in mold and mildew removal.