Every morning I have these itty bitty flying bugs in my bathroom window seals.

Asked March 18, 2019, 8:41 AM EDT

We put plastic up and it seemed to get rid of them for about a week. But they are back now every morning with about a hundred. I vacuum them up daily or just grab paper towels and kill them. They don't run fast just fly periodically. Please help they are very tiny and black.

Oakland County Michigan

1 Response


That fly appears to be a fungus gnat. I would need to examine some to be sure. Please send me 3-4.

Fungus typically develop in the soil of potted plants.

To preserve and protect fragile specimens, it’s always best to submit insects in a small leak proof vial filled with rubbing alcohol or vinegar (the postal service prefers you send them in vinegar). Place the vial in a small zip-lock baggie, then in a small box or mailing tube and mail to

Diagnostic Services
578 Wilson Rd.
East Lansing MI 48824-6469

Be sure to include a note with your contact information including your email address.

You can download one of our submittal forms here:


Here is our location: https://pestid.msu.edu/location/

Regards, Howard