Have you ever noticed those little winged insects crawling out of your bathtub drain? Those are Drain Flies. These creatures have a very nasty reputation for dwelling in the most unsanitary conditions. That’s why some people would ask if they can be a serious threat to our health. But is this correct? Are drain flies harmful? Here are a few key details that can help you answer that.Drain flies are undoubtedly gross. But there are some cases where they can actually be harmful. CC Image courtesy of Sanjay Acharya on WikipediaWhat are drain flies?Drain flies or sewer gnats (Psychodidae) are

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