Farnam Endure Sweat-Resistant Fly Spray for Horses - Lasts Up to 14

In this review the Farnam Endure Sweat-Resistant Fly Spray for Horses is evaluated for riders and barn managers who need long-lasting insect protection in hot, humid, or wet conditions. The bottom line: this product is designed to stay active through sweat and rain, offering up to 14 days of protection with a single application, which makes it a strong choice for trail riders, show competitors, and owners who want fewer reapplications. It also promises a nonsticky, waterbased finish and added skin conditioners that help preserve coat shine while repelling flies, ticks, mosquitoes, gnats and lice.

Key Features

• Sweat-resistant formula: The spray is formulated to cling through sweat and light rain so protection lasts much longer than typical sprays.
• Up to 14 days protection: With multiple active ingredients the product is designed to remain active for up to two weeks after application in many conditions.
• RepeLock technology: The conditioner binds to the hair shaft to create a lasting barrier that helps repel biting insects during rides and turnout.
• Nonsticky waterbased finish: Unlike oily alternatives, Endure leaves a nonsticky coat that does not attract dirt and helps maintain coat shine.
• Added sunscreen and conditioners: The formula includes skin conditioning agents and sunscreen to support skin health under repeated use.
• Multiple sizes and formats: Available as a 15 oz. finishing spray, 32 oz. ready-to-use spray and a 128 oz. gallon refill for barns or frequent users.

Who It's For

This product suits owners and riders who need durable, long-lasting protection for horses that work or travel in humid or rainy climates, or for animals that sweat heavily during exercise. It is especially useful for people who prefer fewer applications between trail rides, shows, or extended turnout.

Those who should look elsewhere include owners concerned about a very low price point or who need a fragrance-free or specialty hypoallergenic formula - customer feedback shows mixed reports about skin irritation, so horses with very sensitive skin may warrant a patch test or a different targeted product.

Pros & Cons

Pros

• Long lasting protection that can remain active for up to 14 days in many situations.
• Formulated to resist sweat and light rain, reducing the need for frequent reapplication.
• Nonsticky, waterbased finish preserves coat appearance and does not attract dirt like oily sprays.
• Available in a large 128 oz. refill size which is convenient for barns and frequent users.

Cons

• Some customers report mixed skin sensitivity, so horses with reactive skin should be tested first.
• A few users have noted packaging issues such as occasional bottle leakage with certain formats.

Specifications

Product name	Endure Sweat-Resistant Fly Spray for Horses
Protection duration	Up to 14 days
Target pests	Flies, gnats, mosquitoes, ticks and lice
Technology	RepeLock hair shaft conditioning technology
Finish	Nonsticky, waterbased with sunscreen and conditioners
Available sizes	15 oz., 32 oz., 128 oz. gallon refill

Our Verdict

Farnam Endure is a practical choice for horse owners who need durable, sweat-resistant insect control that reduces reapplication and protects coat condition. It represents good value for active barns or riders who prefer a nonsticky, long-lasting formula, though those with very sensitive animals should patch test first due to mixed reports on skin irritation.

Frequently Asked Questions

How often should I reapply Endure?
Answer: The formula is designed to stay active up to 14 days, but reapply sooner after heavy rain or very sweaty work depending on horse activity and local insect pressure.

Can I use this on my horse's face and ears?
Answer: Yes, but use a cloth for delicate areas like the face and ears rather than spraying directly to avoid eye or mucous membrane contact.

Is it safe for regular barn use?
Answer: It is intended for repeated use and is available in a 128 oz. refill for barns, but monitor horses for any skin reaction and discontinue if irritation appears.