Protecting Your Horse from Flies: Health Risks, Solutions and Expert Advice

No matter where you live, we can all agree that flies are the uninvited guests we could do without. While they certainly serve a purpose in our ecosystem, managing them around our horses can be a challenge. As we pull out our fly masks, sheets, and leg guards...have you ever stopped to consider why fly protection is so crucial? Beyond just being flat out annoying to both horses and humans, there are real reasons why it’s important to protect against flies and insects.

Cashel Company turned to Dr. Charlie Buchanan of Signature Equine Hospital in Stephenville, Texas, for expert insight into why fly protection matters.

"Cashel Company’s fly masks in particular have a really good design, the best on the market in my opinion. Their sheets breathe really well, too, and provide great protection without needing to use any chemicals on your horse.”

Insect Bite Hypersensitivity

Excessive exposure to flies and other biting insects can lead to Insect Bite Hypersensitivity (IBH) in horses, causing allergic reactions and extreme itching and discomfort. Some horses are more at risk to this condition than others. According to Dr. Buchanan, he sees 15 to 20 cases of IBH each year, often requiring treatment with antihistamines. This condition typically develops after repeated fly exposure, particularly in horses with an overly aggressive immune system. Fly sheets and leg guards can help reduce the risk of IBH and provide relief for horses that are already sensitive. Cashel's Crusader Fly Masks with ear coverage are a must-have as well, because they prevent ticks and other biting insects from entering your horse’s ears and wreaking havoc.

Cashel also makes it easy to get the right fit. Use a Hook-and-Loop Extender to add up to 5 inches to a fly mask that’s too snug, or trim the strap on any Crusader Fly Mask using the built-in 3/4-inch sizing increments for a secure, custom fit.

A Growing Concern

Dr. Buchanan reported that his clinic has seen an increase in fly-related health issues over the past six months. “We’re seeing a couple of cases a month now, where we used to see just one case a year,” he noted. This uptick in cases is concerning because it indicates a higher risk of spreading serious communicable diseases such as Equine Infectious Anemia (EIA) and Pigeon Fever. You may have heard of EIA when getting your annual Coggins test—it's a viral disease that can be transmitted through biting insects. The bacteria responsible for Pigeon Fever, Corynebacterium pseudotuberculosis, can be passed from horse to horse when a fly lands on an open wound of an infected horse and then moves to another horse. Reducing overall exposure to biting insects, especially in the warmer months, can significantly decrease the likelihood of horses contracting and spreading these diseases. For this reason, Dr. Buchanan emphasizes that fly prevention is key.

Preventing Skin Cancer

Fly protective gear is effective in reducing the risk of skin cancer caused by harmful UV rays. While horses with pink skin are most commonly at risk, those with pigmented skin can still be vulnerable. It’s important to consider providing shelter and fly protection for all horses. Cashel offers masks with a long nose option, which is ideal for protecting your horse’s sensitive muzzle from sun exposure.

Summer Sores

“They look like a sarcoid and a bunch of proud flesh," says Dr. Buchanan about the appearance of summer sores. Summer sores are a force to be reckoned with. Horses can develop them when a fly lands on a moist membrane (like eyes or open wounds) and lays eggs. Dr. Buchanan says that he will see a lot of summer sores formed on a horse’s third eyelid. Flies will get into the horse’s eyes or open wounds, and their agitation will create persistent granulation. So, how can you help prevent this from happening to your horse? You guessed it – the use of fly masks!

To Wrap It Up

At the end of the day, as horse owners, we strive to provide the best life possible for our horses. Your horse wants to feel healthy, comfortable, and happy. During the warm and humid months, remember to help your horse by keeping their stalls and pastures clean, providing fresh water, and preventing flies from harming their well-being with the use of masks, sheets, and leg guards. Cashel’s latest release – the Crusader LG4 Leg Guards – are a great addition to your defense arsenal. Shield your horse from the dangers of flies and other insects this season with quality products from Cashel Company.

Cashel Company products can be purchased at retailers nationwide, and more information can be found at www.cashelcompany.com.