Fungus Gnats

Quick Facts

Risk Factors

  • Family
  • Home
  • Pet


  • season Summer



0.125 inch

Inch Long



What do Fungus Gnats look like?

Fungus gnats are small flies that are very mosquito-like in appearance and that live very short lives. Adults grow only to be 1/8th of an inch in length. They have a black body, long legs, and long antennae. They also have a distinctive y-shaped pattern on their wings. Their larvae are small and worm-like with a black head capsule.

What are the signs of Fungus Gnats?

Fungus gnats thrive in moist organic soils and are generally found living outdoors. The females will lay their eggs in the moist soil, and when the larvae hatch from the eggs they will feed on the roots of plants and fungus that is found in the soil. The adult fungus gnats only live about 7-10 days and do not feed during that period of time.

Fungus gnats typically become problematic indoors during the fall and winter when plants that are usually found outside are brought inside to keep safe from the colder temperatures. They can also be found in homes that have potted plants which are overwatered.

What Damage do Fungus Gnats cause?

Fungus gnats can be damaging to houseplants and young plants found growing outside. The larval stage will damage the roots of plants as they feed, causing the plants to be more susceptible to diseases.

How do you prevent Fungus Gnats?

The best way to prevent problems with fungus gnats is to make sure that houseplants are not overwatered. It is also important to check potted plants that are kept outside for signs of fungus gnats before bringing them inside your home.

How do I get rid of Fungus Gnats?

To get rid of fungus gnats, we recommend using fly traps, fly tape, repelling plugs, and fly spray. However, these methods do not find the cause of drain gnats or ensure they are all removed. Call a professional exterminator to fully remove fungus gnats.

Can Fungus Gnats hurt me?

Fungus gnats are not a danger to people because they do not bite or sting and are not known to transmit any diseases to people.

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What to Expect when Suburban Exterminating Arrives

When Suburban Exterminating expert technicians arrive at your house, they’ll find the underlying cause of fungus gnats.