We're in an office with minimal plants and fungus gnats are all over. Where could they come from? Are they dangerous?


Fungus Gnats are not dangerous; they are however incredibly irritating. It does not take much to produce a substantial Fungus Gnat population. If the plants in your office have been inspected for organic material like dead leaves and bark, standing water causing root rot, or any other moist rotting material in the soil surface or in the liner and the source cannot be located it would be good to check garbage disposals, look for leaks or spills in kitchens, garbage can, etc to see if they may be the cause of the issue.

Updated on January 18, 2018

Original Article:

Fungus Gnats: Where Do These Little Flying Bugs Come From?
By thoughthole