What kind of fly is this? 100's in my basement : r/pestcontrol
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Drain Flies/Moths: Signs of Household Plumbing Leaks - Dengarden
Big Flies in House: How Can I Get Rid of Them? | ABC Blog
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Basement Flies - BugGuide.Net
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cluster fly control and treatments for the home yard and garden
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Are House Flies Breeding Inside Your Home? - Colonial Pest Control
Get Rid of House Flies: House Fly Control Information
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How Do You Get Rid Of Drain Flies? – Forbes Home
What are these tiny flies that have suddenly appeared en masse in my bathroom and basement. About 8-10mm wide. Southern Ontario, Canada. : r/whatsthisbug