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8 Facts about Flies

There are more than 110,000 fly species buzzing around the planet1 — from fruit flies to house flies to flesh flies — each with their own habits and habitats.

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Getting to know these (not so always awful) pests

Flies are more than just a nuisance. These buzzing insects also play important roles in nature, including pollinating plants, breaking down organic material, and serving as food for other bugs and animals. Find more fun fly facts below and then learn how to help keep them away.

1. Flies multiply fast

Fruit fly; house fly


If you’ve ever wondered why a fly infestation can get out of hand so fast, it’s due to their rapid reproductive cycle. A single fruit fly can lay around 500 eggs in her lifetime and the entire life cycle from egg to adult only takes about a week. Not to be outdone, a single female house fly can lay up to 500 eggs over the span of just three to four days and repeat the cycle multiple times throughout her life. House flies typically live 15 to 25 days, but can survive up to two months under optimal conditions.2

2. Flies can spread disease

Since house flies regularly feed and lay eggs on feces, garbage, decaying animals, and other filthy places, they can transfer disease-ridden microbes when they land on humans, household surfaces, and food that has been left out. Because of this, many fly species are known to spread disease to humans. In fact, the common house fly is suspected of transmitting at least 65 diseases to people, including:3

  • Dysentery
  • Diarrhea
  • Cholera
  • Typhoid fever
  • Leprosy
  • Anthrax
  • Tularemia
  • Tuberculosis
  • Yaws
  • Poliomyelitis

3. House flies don’t chew

Flies don’t have mouthparts to chew. Instead, they spit out enzymes that turn solid food into a liquid that they can consume.3

4. Flies taste with their feet

Flies have sensors on their tarsi, or feet, that help them determine whether that sandwich they just landed on will be a tasty snack.4

We know flies

The SC Johnson Center for Insect Science™ raises hundreds of flies on a given day. We raise them, research them, and come up with new ways to help you fight them and keep these buzzing insects out of your home.

5. Flies contribute to the food chain6

Carrion Fly


Carrion flies, including blow flies and flesh flies, lay their eggs in rotting animal carcasses. As gross as it sounds, their maggots feed on the decomposing animals and then release the nutrients into the soil through the digestion process.

Other types of flies frequently use animal feces as their breeding and feeding grounds. As their maggots feed, they break down the organic material and release the nutrients for plants, fungi, and bacteria to use. These buzzing insects’ penchant for poop is why picking up after your dog in the yard can help keep flies away from your home.

6. Flies make great detectives6

The first recorded use of flies in a criminal investigation was in 13th-century China. By studying the fly population and their larval stages at a crime scene, these buzzing creatures help forensic scientists estimate the time of death. The fly species most helpful in forensic investigations include house flies, blow flies, and flesh flies.

7. Some fly species pollinate plants

Midge


Some fly species—including bee flies, hoverflies, and midges—serve as pollinators for a variety of plants that are not attractive to bees. In fact, you can thank midges for satisfying your chocolate craving. These tiny flies are the primary pollinators of the cacao (or cocoa) tree.6

8. The world’s biggest fly7

An adult timber fly can grow to a whopping 8 centimeters (3.15 inches). These humongous flies live in Central and South America and get their name because they lay their eggs in dying trees. Despite their large size, timber flies are quite harmless.

Help get rid of flies

Although flies play an important role in nature, most people don’t want these filthy insects flying around their home. Get expert tips to help keep flies away and protect your family from these disease-spreading pests.

Raid® solutions for flies

Help protect your family and home with our specially formulated products designed to get rid of flies.

  • NA

    Experience peace of mind with this solution that uses blue light technology instead of chemical insecticides to manage fruit flies, mosquitoes, and more. Simply plug the Raid Essentials® Light Trap into an electrical outlet and capture indoor flying insects hands-free.

     

    Highlights:

     

    • Our insect light trap is people- and pet-friendly* (*when used as directed)
    • Uses continuous light — not chemical insecticides — to capture flying insects
    • Traps fruit flies, mosquitoes, moths, gnats, house flies
    • Discreet design

     

    Product label

  • Flies, mosquitoes, or wasps buzzing a little too close for comfort? Raid® Flying Insect Killer works on contact — both indoors and outdoors — with no lingering chemical odor.

     

    Highlights:

     

    Raid® Flying Insect Killer is specially formulated to kill a number of flying insects including flies, wasps, hornets, and mosquitoes.

    • It can be used both indoors and outdoors.
    • Also available in Outdoor Fresh® and Orange Breeze scents.
    • Available in 15 oz., 18 oz., and 20 oz. sizes.

     

    Product label

  • From scurrying insects on the ground to buzzing insects in the air, Raid® Multi Insect Killer spray controls the most common bug problems — both inside and outdoors.

     

    Highlights:

     

    Raid® Multi Insect Killer is specially formulated to kill both crawling and flying insects.

    • Kills common listed household insects.
    • Also available in Orange Breeze scent.
    • Available in 15 oz. size.

     

    Product label

  • Kills bugs without harming your house or garden plants.

     

    Highlights:

     

    Raid® House & Garden Bug Killer is specially formulated to kill crawling, flying and garden insects.

    • Kills bugs and won't damage house or garden plants when used as directed.
    • Use indoors or outdoors to kill ants, roaches, spiders, flies, and other listed bugs on contact.
    • For Outdoor: Use this product on ornamental garden plants
    • Also available in Orange Breeze scent.
    • Available in 11 oz. size.

     

    Product label

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