Can drain flies come from shower?

Yes, drain flies can originate from your shower. These small insects, also known as moth flies or sewer gnats, are often associated with moist and organic-rich environments, such as drains, sewers, and bathrooms. If you notice drain flies in your shower, it’s likely that they have found their way into your bathroom from the drain or other damp areas. In this article, we will explore how drain flies can come from your shower and what you can do to address this issue.

Understanding Drain Flies

Before discussing their presence in showers, let’s briefly understand drain flies. They are small insects commonly found in and around drains, sewers, and other damp locations. Drain flies lay their eggs in the slimy film that accumulates inside drains and feed on organic matter and bacteria found in these environments. Adult drain flies are characterized by their small size and fuzzy appearance.

How Drain Flies Enter Showers

Drain flies are attracted to moisture and organic matter. Here’s how they can find their way into your shower:

  1. Drain Infestations: If you have a drain fly infestation in your home, the adult flies can emerge from the drains, including the shower drain. They lay their eggs in the organic matter lining the drain, and when the larvae hatch and mature, adult drain flies can emerge from the drain and fly around your bathroom, including the shower area.
  2. Moisture and Humidity: Drain flies are naturally drawn to areas with high moisture levels. If your shower is not adequately ventilated, the humidity and moisture can make it an attractive location for drain flies to congregate.

Addressing Drain Flies in Your Shower

To address drain flies in your shower and prevent their return, consider the following steps:

  1. Clean Drains: Regularly clean and sanitize your drains to remove the organic matter and bacteria that attract drain flies. Use drain cleaners or a mixture of vinegar and baking soda to break down the buildup.
  2. Fix Leaks: Repair any plumbing leaks promptly to eliminate standing water that can create an ideal breeding ground for drain flies.
  3. Install Drain Covers: Consider using drain covers to prevent adult drain flies from laying their eggs in your drains.
  4. Ventilation: Ensure proper ventilation in your bathroom to reduce humidity levels and make it less appealing to drain flies.
  5. Regular Cleaning: Keep your bathroom clean, particularly the shower area. Remove any standing water and eliminate soap scum or other organic materials that may accumulate.


In conclusion, drain flies can indeed come from your shower if your drains are infested or if the bathroom environment is conducive to their presence due to moisture and organic matter. By addressing the root causes and implementing preventive measures, you can effectively manage and prevent drain fly infestations in your shower and maintain a clean and hygienic bathroom environment.

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