Are Horse Flies Attracted to Light

Are horse flies attracted to light? Yes, horse flies are attracted to light. They use light as a way to find food sources and can be seen flying around outdoor lights or windows of lit buildings at dusk and dawn. Light attracts the female fly, which uses it for scanning her surroundings for potential hosts—including humans, horses, cattle and other animals—where she will feed on blood in order to lay eggs.

The male is also drawn to light but prefers ultraviolet wavelengths that many artificial lights produce. In addition, some species of horseflies tend to fly towards dark surfaces illuminated by bright light such as walls or trees where they rest before searching for prey.

Horse flies are notoriously attracted to light. Their vision is based primarily on motion and color, so they can be drawn to any bright light source in the area. They are especially attracted to ultraviolet (UV) lights, which draw them from great distances.

This means that if you have an outdoor space with a lot of UV lighting, such as tiki torches or landscape lighting, you may find yourself dealing with more horse fly infestations than usual. Be sure to check for signs of these pests before turning on your lights!

How to Get Rid of Horse Flies

One of the best ways to get rid of horse flies is to use a fly trap. Fly traps are designed specifically for this type of insect and work by luring them in with the smell of food or bait, then trapping them once they enter. Additionally, you can use insecticides such as permethrin or pyrethrin-based products that are safe for your horses.

Be sure to read product labels carefully before using any chemical treatments on your animals. Finally, keeping areas clean and free from manure will help reduce their populations as well.

What are Horse Flies Attracted To?

Horse flies are attracted to a variety of smells and visual cues, such as the smell of animals, particularly horses. They are also drawn to sweat and other human secretions; movement like running or waving arms; shiny surfaces that reflect light; dark colors, especially blue; heat sources like sunlight or body warmth; and moisture. Horse flies have an advanced vision system that they use to identify their hosts.

Additionally, they use UV wavelengths for navigation purposes since some host species have UV-reflective patches on their bodies. It is important to note that horse flies are very difficult pests to control because many repellents do not work effectively against them. The best way to prevent horse fly infestations is through physical exclusion by covering windows with screens and keeping doors closed when possible.

What Time of Day are Horse Flies Most Active?

Horse flies are most active during the day time, typically in the afternoon when temperatures and light levels peak. They can be seen buzzing around at all times of day, but they become significantly more active from late morning until early evening. As daytime progresses, horse flies will begin to feed on their hosts — often humans or animals.

During this period of activity, they’re looking for food sources that provide them with a blood meal so they can reproduce and lay eggs later on in the season. While these pests may not seem like a major threat to most people, it’s important to keep an eye out for them as they can cause considerable discomfort through bites and stings if left unchecked.

What Will Keep Horse Flies Away?

Horse flies can be an unpleasant and dangerous nuisance for you and your horse. Fortunately, there are several steps that you can take to keep these pests away from your property. The best way to start is by eliminating potential breeding grounds such as stagnant water sources, thick vegetation, and manure piles.

Additionally, using fly traps or strips will help capture any adult flies in the area before they lay their eggs. You can also use natural repellents like citronella oils or herbs like basil and rosemary around your animal’s stall or paddock to make the environment inhospitable for them. Finally, installing fans or other methods of air circulation near areas where horses spend a lot of time will discourage horses from entering those areas due to the wind created by the fans which makes it difficult for them to land on their target host.

By taking these proactive steps you should be able to successfully combat any infestations of horse flies on your property!

Are Horse Flies More Active at Night?

Horse flies are nocturnal insects, meaning they’re most active at night. While horse flies can be found during the day, their activity is more likely to pick up at dusk and remain high until dawn. In addition to being more active during the night, horse flies have special adaptations that help them hunt in low light conditions such as larger eyes and an increased sensitivity to movement.

Because of this increased activity at night, it’s important for people who spend time outdoors or around horses to take extra precautions when these pests are present by using repellents and protective clothing. Horseflies can carry diseases such as anthrax and tularemia so it’s important to try and minimize contact with them if possible.

Do you think flies are attracted to your horse just because of sweat? Think again!


In conclusion, it is clear that horse flies are a common nuisance for humans, and can be attracted to light in order to find their prey. While the exact mechanism of this behavior is still unknown, what we do know is that installing electric bug zappers or other forms of lighting can help minimize the presence of these pesky insects. It is important to practice safe pest control methods when dealing with pests like horse flies as they can spread disease.

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