Fly protection for horses

A horse's eyes produce moisture that attracts flies, leading to painful conjunctivitis and swollen tear ducts. A well-fitted fly mask is non-negotiable. Look for masks with fleece-lined edges to prevent rubbing, soft mesh ears for gnat protection, and UV-blocking materials to prevent sunburn on pink-nosed horses.

For horses that are highly sensitive to bites, physical barriers are far more effective than sprays. Modern fly sheets use ultra-breathable, reflective mesh that keeps horses cool while blocking insects. Don't forget fly boots for the lower legs—they drastically reduce the relentless stomping that can lead to hoof damage and loose shoes.

Insect Growth Regulators (IGRs) are feed additives that pass safely through the horse's digestive tract and end up in their manure. When flies lay eggs in the treated manure, the IGR prevents the larvae from maturing into biting adults. For this to work, you must start feeding it a month before fly season begins.

Fly predators are tiny, stingless wasps that naturally hunt and destroy fly pupae before they hatch. Releasing a pouch of these beneficial insects around your manure piles and paddock perimeters every 3-4 weeks is an incredibly effective, chemical-free way to decimate the barn's fly population.

Fly spray is best used as a temporary shield during rides. Oil-based sprays last longer through sweat, while water-based sprays attract less dust. Use a specialized roll-on repellent or a repellent-soaked mitt to safely apply protection around the horse's eyes, muzzle, and the sensitive skin inside their ears.

Flies need two things to breed: moisture and muck. Clean stalls and heavily trafficked paddock areas daily. Relocate your primary manure pile as far downwind from the barn as possible, and regularly dump and scrub water troughs to prevent mosquitoes from laying eggs in stagnant water.