Stop Reapplying Every Two Hours. One Spray Lasts 17 Days.
Your horse is stomping, swishing, and breaking focus — not out of bad manners, but because the flies have already won. There's a spray formulated to end that cycle, and it lasts longer than any fly spray you've tried before.
The Problem
You Spray Before Every Ride and the Flies Come Back Before You Reach the Gate
It starts the same way every summer morning. You pull your horse from the paddock, cross-tie him in the aisle, and reach for the fly spray. He stands still for the ritual — because he knows it's coming, and because somewhere in his memory, he trusts it. You coat his legs, his belly, his face, the underside of his jaw. You step back. He looks calm. You tack up, walk to the mounting block, and before you've gathered your reins, he's already stomping at his left front.
By the time you're ten minutes into your warm-up, the flies are back. Not just one or two, but a cloud of them hovering at his flanks, landing on his ears, clustering around the corners of his eyes. He breaks from the trot, tosses his head, swishes his tail so violently you can feel the tension travel up through the saddle. You're not schooling anymore — you're just trying to keep his attention.
Trail riders know this scenario better than anyone. You've packed extra spray in your saddlebag. You stop mid-trail, reapply, and watch the bottle drain faster than you planned. your horse you're riding is a patient animal by nature, but by August he's hypersensitive — flinching at shadows, spooking at movement, reacting to every brush of air on his skin because flies have conditioned him to expect pain from contact.
Fly season doesn't just affect your horse's comfort. It affects your entire relationship with riding. Schooling sessions that should be productive turn into endurance contests. Trail rides you've planned for become management exercises. Barn time you used to enjoy becomes an arms race with insects — and most summers, the insects are winning.
By the time you're ten minutes into your warm-up, the flies are back. Not just one or two, but a cloud of them hovering at his flanks, landing on his ears, clustering around the corners of his eyes. He breaks from the trot, tosses his head, swishes his tail so violently you can feel the tension travel up through the saddle. You're not schooling anymore — you're just trying to keep his attention.
Trail riders know this scenario better than anyone. You've packed extra spray in your saddlebag. You stop mid-trail, reapply, and watch the bottle drain faster than you planned. your horse you're riding is a patient animal by nature, but by August he's hypersensitive — flinching at shadows, spooking at movement, reacting to every brush of air on his skin because flies have conditioned him to expect pain from contact.
Fly season doesn't just affect your horse's comfort. It affects your entire relationship with riding. Schooling sessions that should be productive turn into endurance contests. Trail rides you've planned for become management exercises. Barn time you used to enjoy becomes an arms race with insects — and most summers, the insects are winning.
Why It Keeps Happening
Most Fly Sprays Are Designed to Be Reapplied, Not to Last
The economics of fly spray are not mysterious. A product that wears off in two hours gets purchased more often than one that lasts two weeks. This isn't a conspiracy — it's a market dynamic — but it does explain why the shelves at most farm stores are stocked with products that perform exactly well enough to earn repeat purchases without ever actually solving the problem. The label says 'up to 8 hours.' What it doesn't say is that sweat resets that clock to zero after the first canter set.
Most riders respond to this the way you'd expect: they try more product. A heavier application. More frequent reapplication. A different brand every season. They mix fly spray with a coat conditioner hoping for better adhesion. They layer barrier wipes over top. They apply it again after every ride. The result is a horse who smells strongly of chemicals and still stands in the corner of the pasture, nose pressed against the fence, trying to catch a breeze.
What most formulas miss is a fundamental understanding of horse biology and working conditions. A horse generating heat during exercise sweats from the neck, the flanks, the chest — exactly where flies concentrate. Water-soluble formulas sheet off with that sweat, often completely, within 20 minutes of serious work. Formulas that repel but don't kill leave the insect population intact and conditioned — the flies simply learn to wait. And scent-masking approaches work right up until your horse rolls, which in summer is approximately every 45 minutes.
The result is a rider who has tried everything and concluded that fly season is simply something to be endured. That there is no real solution. That the best you can do is manage — reapply, rewrap, resign yourself. That conclusion has been wrong for years, but without a genuinely different kind of formula, there was no evidence to prove it.
Most riders respond to this the way you'd expect: they try more product. A heavier application. More frequent reapplication. A different brand every season. They mix fly spray with a coat conditioner hoping for better adhesion. They layer barrier wipes over top. They apply it again after every ride. The result is a horse who smells strongly of chemicals and still stands in the corner of the pasture, nose pressed against the fence, trying to catch a breeze.
What most formulas miss is a fundamental understanding of horse biology and working conditions. A horse generating heat during exercise sweats from the neck, the flanks, the chest — exactly where flies concentrate. Water-soluble formulas sheet off with that sweat, often completely, within 20 minutes of serious work. Formulas that repel but don't kill leave the insect population intact and conditioned — the flies simply learn to wait. And scent-masking approaches work right up until your horse rolls, which in summer is approximately every 45 minutes.
The result is a rider who has tried everything and concluded that fly season is simply something to be endured. That there is no real solution. That the best you can do is manage — reapply, rewrap, resign yourself. That conclusion has been wrong for years, but without a genuinely different kind of formula, there was no evidence to prove it.
The Solution
Seventeen Days. Sweat-Proof. Rain-Proof. Protection That Keeps Up With Your Horse.
UltraShield® EX Fly Spray is not an incremental improvement on what you've been using. It was engineered with a fundamentally different goal: protection that persists through the conditions that defeat ordinary fly spray. The science behind it is called UltraBond® Technology — a proprietary bonding system developed by Absorbine® that anchors the active ingredients to your horse's coat rather than sitting on the surface where they can sheet off with sweat or wash away in rain. One application delivers up to 17 days of protection, even on a horse in consistent work.
The active ingredient profile sets it apart from budget alternatives. UltraShield® EX contains Natural Pyrethrin derived from chrysanthemum flowers, Permethrin for residual killing action, and Piperonyl Butoxide as a synergist that amplifies the effectiveness of both. Together these three compounds kill on contact and continue to repel — hitting more than 70 species of flies, mosquitoes, ticks, and gnats. This isn't a formula that asks insects to move along. It eliminates them from the equation entirely, for weeks at a time.
The base formula brings an additional layer of care that other fly sprays don't bother with. The water-based, ready-to-use formula contains multiple sunscreen compounds along with coat conditioners — including aloe vera and lanolin — so every application is also a conditioning treatment. It's safe for horses, ponies, foals, and dogs over 12 weeks of age, and can be applied directly to stalls and bedding for perimeter-level protection. At Schneiders, we've carried fly protection for horses for decades, and UltraShield® EX consistently earns the highest repeat-purchase rate of any fly care product in our catalog.
For riders who have spent an entire summer reapplying and still losing, this is the product that changes the math. Apply once before a multi-day trail weekend and come home to a horse who stayed comfortable the entire time. Use it before a horse show and trust that re-application between classes is a choice, not a necessity. The 128oz gallon size means you can supply an entire barn for a full season without running short — and the 32oz spray bottle fits cleanly in a saddlebag for rides where a confidence top-up makes sense.
The active ingredient profile sets it apart from budget alternatives. UltraShield® EX contains Natural Pyrethrin derived from chrysanthemum flowers, Permethrin for residual killing action, and Piperonyl Butoxide as a synergist that amplifies the effectiveness of both. Together these three compounds kill on contact and continue to repel — hitting more than 70 species of flies, mosquitoes, ticks, and gnats. This isn't a formula that asks insects to move along. It eliminates them from the equation entirely, for weeks at a time.
The base formula brings an additional layer of care that other fly sprays don't bother with. The water-based, ready-to-use formula contains multiple sunscreen compounds along with coat conditioners — including aloe vera and lanolin — so every application is also a conditioning treatment. It's safe for horses, ponies, foals, and dogs over 12 weeks of age, and can be applied directly to stalls and bedding for perimeter-level protection. At Schneiders, we've carried fly protection for horses for decades, and UltraShield® EX consistently earns the highest repeat-purchase rate of any fly care product in our catalog.
For riders who have spent an entire summer reapplying and still losing, this is the product that changes the math. Apply once before a multi-day trail weekend and come home to a horse who stayed comfortable the entire time. Use it before a horse show and trust that re-application between classes is a choice, not a necessity. The 128oz gallon size means you can supply an entire barn for a full season without running short — and the 32oz spray bottle fits cleanly in a saddlebag for rides where a confidence top-up makes sense.
🛡️
17-Day Sweat-Proof Hold
UltraBond® Technology anchors active ingredients to the coat so sweat and rain can't wash protection away.
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Conditions While It Protects
Aloe, lanolin, and multiple sunscreens turn every fly spray application into a coat-conditioning treatment.
Side by Side
Compare Long-Lasting Fly Sprays for Your Horse
Compare manufacturer-published formula, application, protection, and size information. These are label and product-page facts, not claims about real-world performance under every barn condition. “Not listed” means the cited manufacturer page does not publish that specification.
| Feature | Schneiders UltraShield® EX Fly Spray | Farnam Endure® Sweat-Resistant Fly Spray for Horses | Pyranha® Equine Spray N' Wipe |
|---|---|---|---|
| Maximum published protection interval | Up to 17 days on horses, ponies, and foals over 12 weeks old | Up to 14 days of fly control | Not listed on the cited manufacturer product page |
| Published initial reapplication guidance | Every 7–10 days under normal conditions for initial applications | Every 5–7 days under normal conditions for initial applications | Not listed on the cited manufacturer product page |
| Formula base | Ready-to-use, water-based formula | Water-based formula | Ready-to-use, water-based formula |
| Listed active ingredients | Pyrethrins, permethrin, and piperonyl butoxide | Cypermethrin, pyrethrins, piperonyl butoxide, and butoxy polypropylene glycol | Pyrethrin and permethrin |
| Mixing or shaking instruction | Shake well before use; no mixing necessary | Shake well before use | No shaking or stirring required, according to the manufacturer |
| Application methods published | Spray or wipe-on | Spray or wipe-on | Spray N' Wipe format |
| Animals listed on the cited product page | Horses, ponies, foals, and dogs over 12 weeks old | Horses; manufacturer directions also reference horses and ponies | Horses |
| Published package sizes | 32 oz spray and 128 oz gallon | 15 oz continuous spray, 32 oz trigger spray, and 128 oz gallon | 3.4 oz trail size, 15 oz continuous spray, quart, and gallon |
| Additional manufacturer-listed formula features | UltraBond® Technology; sunscreens, aloe, and lanolin | RepeLock® conditioner that binds to the hair shaft; sunscreening agent listed on the label | Pyranha Suspension Technology and citronella scent |
Protection That Lasts. A Coat That Shines. Nothing You Don't Need.
Warmth: 32 oz. Spray
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Get 17 Days of Protection With One Application of UltraShield® EX.
For horses in active work, trail rides, shows, or summer turnout, UltraShield® EX delivers documented protection against 70+ insect species through sweat and weather — apply once and ride with real confidence. Schneiders has carried the Absorbine® line for years because it earns repeat loyalty through genuine, documented results season after season. Order the 32oz spray or the 128oz gallon and give your horse the fly-free summer he deserves.
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