Ecovet Blog

Independent Study: Ecovet Outperforms All Other Repellents* in Both Efficacy and Duration

Watch the study results in action, and read more below:

A 2019 research study published in the Journal of Economic Entomology confirms that, in head-to-head comparisons with other fly spray products,

Ecovet is the most effective at inhibiting flies AND Ecovet lasts the longest.

 According to the study, and as illustrated by the graph above:

“All products marketed as fly repellents decline in inhibiting flies with time. Natural A [Ecovet] appeared to inhibit flies longer ... ”

The study included a wide range of commercially available repellents, including those marketed as natural and those with synthetic pyrethroids as active ingredients.

Ecovet is the only repellent that lasted more than two days, which means that ... with Ecovet, a little goes a long way.

The additional benefit of Ecovet is that it also helps improve insect-related skin sensitivity.


The natural products outperformed the synthetic (pesticide repellents) at all dilutions and times.

In a survey of horse owners, more than 80% requested more information on nontoxic pest control solutions.

“ ... Natural A [Ecovet] continued to perform at over 75% inhibition at 1 d [day] post-application, even at 50% dilution.”

See the findings for yourself by clicking on the report below:

*Of repellents included in the study: “Behavioral Inhibition of the House Fly (Diptera: Muscidae) When Exposed to Commercial Equine Fly Repellents,” Elizabeth V. Tuorinsky and Erika T. Machtinger, Journal of Economic Entomology, September 2019

Repellents studied: Natural A = Ecovet; Natural B = Equiderma; Natural C = Outsmart; Pyrethroid A = Bronco; Pyrethroid B = Endure; Pyrethroid C = Optiforce; Pyrethroid D = UltraShield Red. Quoted material is directly from the study; graphs were created by Ecovet to illustrate the study data.

Ecovet: Before and After


This fly season, stop spraying toxic pesticides and start spraying the only pesticide-free solution that works and even helps improve insect-related skin sensitivity.

Ecovet is a totally different type of fly spray for horses - it is not a pyrethrin/pyrethroid derivative (which can be toxic), or an essential oil product.

Instead, Ecovet is the first fatty-acid fly repellent for horses, and it now has an updated scent: an herbal blend of lavender with a hint of tea.

Learn more about Ecovet fly spray for horses.

New Scent Is Here!

Just in time for another dreaded fly season, Ecovet fly repellent for horses now has an improved scent based on customer feedback.

Ecovet founder and veterinarian Dr. Tim John describes the new fragrance as an "herbal blend of lavender with a hint of tea."


A totally different type of fly spray, Ecovet is not a pyrethrin/pyrethroid derivative, nor is it an essential oil product. Instead, Ecovet's formulation is 5% each of three different food-grade fatty acids, 84% volatile silicone oil and 1% fragrance. After Ecovet is applied, the three fatty acids evaporate at different rates and create a vapor barrier around the horse. This barrier prevents insects from locating the horse as a potential victim by confusing and overwhelming the bugs' normal directional ability, their "GPS." 

"For our new fragrance formulation, the challenge was to find something that blends nicely with the inherently musky scent of natural fatty acids. We tested many things, but we believe this new herbal blend is a game changer!" explains Dr. John.

The new scent does not impact Ecovet's well-known effectiveness in the battle against flies. 

Ecovet protects horses from flies, gnats, mosquitoes, ticks and lice. Ecovet also improves insect-related skin sensitivity by stopping bugs from finding and landing on horses in the first place. "If a horse isn't bitten, there's less chance for hypersensitivity, aka the dreaded sweet itch," says Dr. John.

An EPA-registered product, Ecovet comes in an 18-oz. bottle and 1-gal. refill, as well as a travel size. Horse owners can look for Ecovet containers with gold "new scent" labels to try the updated fragrance.


Here's a Fly We Actually Like!

Many thanks to Mina for sharing her experience using Ecovet on her aptly named gelding, Fly:


"[I]t's the best fly spray I've ever used! Not a single thing touches my gelding. He's so sensitive to bugs I have a hard time riding him because he's so busy trying to swat flies that he can't pay attention.

"I've tried everything there is and nothing seems to work. I used your fly spray while riding and he's a completely different horse. I've had the best rides all spring/summer on him since switching to your fly spray. He's calm and attentive. He used to run the gate in the field to come in he was so bothered. Not anymore. He's content to graze all day! Everyone at my barn is impressed."

Read more Ecovet buzz.

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