Q:

What causes gnats?

A:

Quick Answer

Gnat infestations in the home are typically caused by fungus gnats. These gnats are attracted to moist conditions with organic material. Over-watered house plants, places of condensation and rotting vegetation are the common culprits in gnat infestations.

  Know More
What causes gnats?
Credit: John Macgregor Photolibrary Getty Images

Full Answer

Fungus gnats are very tiny and resemble mosquitoes, but unlike mosquitoes they do not bite and have no other capacity to harm anyone. However, their life cycle from egg to adult is extremely fast, usually less than two weeks. This means that an infestation of gnats can grow quickly and become a nuisance. Gnats get into homes in two primary ways. The first is through open doors or windows and the second is through eggs hidden in houseplants. Over-watering the house plants gives the gnat eggs perfect condition to hatch and grow. Adult gnats can also come in through doors and windows in warmer months and then find organic matter in which to lay their eggs. It is common to find gnats gathering around fruit or vegetables sitting out. They lay their eggs in these items and as they rot, the eggs turn into more flies and the cycle repeats.

Getting rid of fungus gnats is usually a matter of taking away their habitat. Another method is to lay out sticky traps for the adult flies.

Learn more about Pest Control

Related Questions

  • Q:

    Where do gnats come from?

    A:

    The most common gnats within a home are fungus gnats, which claim soil from plants as their habitat. Gnats inside a home can also be due to having fruit flies and/or phorid flies.

    Full Answer >
    Filed Under:
  • Q:

    How do you kill gnats?

    A:

    Most people choose to kill gnats using pesticides or opt for a mixture of water, vinegar, and dish soap for a safer alternative that will not harm pets. Due to the number of species of gnats, there is no single best way to exterminate them.

    Full Answer >
    Filed Under:
  • Q:

    Why are there gnats in my bathroom?

    A:

    Gnats may enter the home when food, such as ripe fruit or fungus, is present. Gnats often live in warm, humid environments, such as behind tubs and in drain the pipes of bathrooms.

    Full Answer >
    Filed Under:
  • Q:

    How do you get rid of gnats in your house?

    A:

    Removing food and water sources is an effective method of controlling gnat populations. Fungus gnats, the type most commonly found in homes, thrive in areas where potted plants, gardens and compost are found. A shovel, sand, a small lidded jar, vinegar and dish detergent are tools needed to eliminate gnats. The process of reducing gnat populations may take several weeks, and requires removing excess water from gardens and lawns, covering compost bins and placing traps for gnats inside the home.

    Full Answer >
    Filed Under:

Explore