Fungus Gnat

Fungus Gnat Identification and Control

Correct identification is an important first step in pest control.


Fungus gnat on a white background
Sciaridae and Fungivoridae
How To Identify a Fungus Gnat

Fungus gnats are smaller, dark, delicate-looking flies similar in appearance to mosquitos. Their wings are light gray to clear in color, long slender legs and have segmented antennae. 

Where Do They Come From

Fungus gnats usually originate from soil in potted house plants and can develop in soil or mulch outside of buildings. Eggs and larvae nest in soil and moist organic material.

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Where Do They Lay Their Eggs

Eggs and larvae nest in soil and moist organic material.

Name :

Sciaridae and Fungivoridae

Size :


Light :

Yes, they are attracted to light

Tips & Tricks

Front of a tan home with a green lawn in front

How To Prevent Fungus Gnats From Entering Your Home

  • You can prevent fungus gnats from entering your home by making sure your home or building is well sealed, especially around windows and doors. Fungus gnats are very attracted to light and will try to enter buildings if lights are on.
  • If flies are coming in from outside, consider changing exterior lighting to sodium vapor lighting.
House plants in pots on a table by a window

How To Get Rid Of Flies Around Your Home

  • Locate where they could be breeding (remember soil in potted plants) and remove it.
  • Do not overwater your house plants and let the soil dry out between watering.
  • Keep exterior doors closed, install screen doors, or install automatic door closers.
  • You can also use Bacullus thuringiensis, subs. Israelensis-based insecticides (e.g Gnatrol) on soil of affected potted house plants.

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How To Control

Flies can be difficult to control, but that’s what we are here for. We create a strategic plan to gain control of your fly problem and make sure we get results.

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Thorn's Approach

We take a scientific approach to fly control. We start with an inspection and assessment to help us identify the flies, locate where they are, and create a specific plan for your property. Every home and business is different and requires a unique strategy.


Our Approach to Pest Control

Proper pest management starts with a detailed inspection and assessment from an expert pest professional before treatment. Thorn Pest Solutions uses a three-step process rooted in science to eliminate pests with long-term results.

Driven By Science. Lead By Service.

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Assess Situation

First, we identify the root problem(s) with a site assessment. Pests are almost always an indicator of an environmental condition. This will determine the best actions to provide short and your long-term results against pests.

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Execute Action Plan

Next, we develop a plan to fix the problems we discovered. This includes solving current pest issues, eliminating conducive conditions, and monitoring for future pest activity. Good pest management starts with a good plan.

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Track Success

Lastly, we implement the solutions we developed including inspection, monitoring, and preventing future pest infestations. Good pest control requires a good offense and not just defense. Prevention is key.

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