Drain Fly

What does a drain fly look like?

A drain fly looks like a miniature moth.  They are small, but very hairy flies that congregate around drains and other water supplies.


Drain flies are nocturnal insects that eat dead organic matter, mostly that found in and around drain pipes.  They often appear in large numbers.


Drain flies live in dark, wet places.  They reproduce by laying eggs in the muck that lines drain pipes or in other moist, gelatinous organic matter.  Thus, they are often associated with bathrooms and other drains around the home. 


Drain flies do not bite humans, but are a potential heath concern because they can spread a variety of diseases.  Bronchial asthma can be caused by inhaling fragments of dead flies. 


Drain flies are best prevented through vigilant sanitation practices.  Eliminate potential breeding sites like drains, bathtubs, etc. by keeping them dry.  

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