Call Today: 877-521-3255

Fly Disease Kill Horses – Horse Fly Spray

Posted on 29 May 2016

Practicing good fly control can minimize the threat of the many common insect borne diseases that torment horses around the world. A good horse fly spray can be an important part of your disease control program.

Mechanical dermatitis – caused by the fly bit itself. Inflammation, bleeding and Ultra Fly Shieldscabbing. Common to horses being stabled or horse that are kept close together. (Stable fly)Some flies transmit disease by directly transferring infectious organisms from the blood, mucus or lesions of one horse to another horse nearby. Other flies serve as intermediate hosts in the life cycle of transmitted parasites. They pass immature forms on to their next-stage host during the feeding process. Still others use the horse as an incubator of sorts, for their own young. And then there are the hordes of flying insects who are just plain irritating, firing up skin allergies with the venom of their bites. The following list represents the most common fly-borne diseases that torment the world’s horses today.

Allergic Dermatitis – Black flies & Culicoides are the most common causes of allergic dermatitis. They carry antigens in their saliva that incites the horse’s immune system to hyper react to their bit. Black flies usually attack in swarms and can cause sensitive animals to become listless, week and unsteady from the toxic bites.

Surface Parasites – Blowflies and Screwworm flies lay eggs directly on an open wound. The hatching maggots then infect the damaged tissue until they mature into adult flies. Warble flies lay their eggs directly on the horse’s skin. The hatching larvae bore directly into the skin where they remain dormant until warmer weather.

Internal Parasites – Fly transmitted internal parasites include protozoa that live in the horse bloodstream and digestive systems. Botflies are the most common noted by their yellow eggs on the hair of the horse.

Fungal Diseases – only a small number of fungi populate and infect animals. Flies are the main carrier of the fungi that infect horses. Stable flies are the most common flies that carry these fungi. Watch out for open wounds they are the most susceptible to fungal infections.

Bacterial & Viral Diseases – Blood borne diseases pose the greatest danger toHorse Fly Spray horses. Anthrax is amount the most dreaded bacterial disease transmitted by flies. This can be confused with acute poisoning or snakebites. Typically in dry dusty places the horse develops a high fever and dies suddenly. Viral infections are more common in the US and are spread primarily by biting flies. Viruses like EIA (Equine infectious anemia) or swap fever are found in wet warm areas where biting flies and mosquitoes flourish. The bigger blood feeders such as horseflies and deerflies can be your main threat for carrying these diseases.

Set Up a Fly Protection program with a good horse fly spray


    1. Get Ahead of the problem – Start early

    2. Keep the barn area clean – clean out stalls, Keep pastures picked up.

    3. Keep fresh water – Washout water troughs regularly

    4. Avoid standing water.

    5. Use a good Horse Fly Spray -Alternate between two kinds of fly sprays for max effectiveness.

    6. Use Fly Sheets and good fitting Fly Mask

    7. Natural predators and plants – Fly Predators and Fly repellent plants around your barn and horse areas.



          It's Important to have a good fly protection program in place at your barn or stable area. Using a combination of different fly sprays, natural plants and fly predators will minimize the fly population and keep disease and the annoying flies away.

          Many horses die each year from Colic caused by parasite infecting the horse. Many other horses die from other diseases transmitted by flies and Mosquitoes. Help protect them against these diseases.

          More Posts

          Join our Mailing List

          Sign up to receive our email updates

          Join Our Customer Club Email Group

          Search our store