Best Fly Sprays for Horses 2026: According to Reviews | Chewy

Best Fly Sprays For Horses

Flies can quickly become a daily frustration for horses during warmer months, especially around barns, pastures, and riding areas. Fly sprays are commonly used to help make horses more comfortable while reducing irritation from biting insects during turnout and exercise. Different formulas, application styles, and scent preferences can all influence which option works best for your horse and barn routine.

Our Top Picks

How we created this fly spray list

We leveraged input from our veterinarians and artificial intelligence to identify key considerations to help you find the best fly sprays for horse.
We scanned thousands of customer reviews and ratings and scored each product based on its performance against each of the key considerations. We then considered how popular a product is with Chewy customers and combined that with its key consideration scores to create the list of the best fly sprays for horses.

Key fly spray considerations

Ease of Application

Effectiveness

Ingredients

Longevity

1
Pyranha Wipe N' Spray Fly Protection Horse Spray, 32-fl oz bottle
Pyranha Wipe N' Spray Fly Protection Horse Spray, 32-fl oz bottle
Pyranha Wipe N' Spray Fly Protection Horse Spray, 32-fl oz bottle

Pyranha Wipe N' Spray Fly Protection Horse Spray, 32-fl oz bottle

Rated 4.7 out of 5 stars
1,102
$23.63 Chewy Price
($0.74/fl oz)
Promo, New Customers Only: Spend $49+, get $25 eGift Card

Our ratings

Ease of Application

4.5/5
Great

Effectiveness

4.6/5
Excellent

Ingredients

4.4/5
Great

Longevity

4.3/5
Great

Is this fly spray right for my pet?

Top Ingredients

Active Ingredients: Pyrethrins, Piperonyl Butoxide & Butoxpolypropylene Glycol

Farm Animal Type

Horse

Health Feature

Pest Control
2
Farnam Swat Dog & Horse Fly Repellent, 7-fl oz tub
Farnam Swat Dog & Horse Fly Repellent, 7-fl oz tub
Farnam Swat Dog & Horse Fly Repellent, 7-fl oz tub
Farnam Swat Dog & Horse Fly Repellent, 7-fl oz tub
Farnam Swat Dog & Horse Fly Repellent, 7-fl oz tub
Farnam Swat Dog & Horse Fly Repellent, 7-fl oz tub
Farnam Swat Dog & Horse Fly Repellent, 7-fl oz tub
Farnam Swat Dog & Horse Fly Repellent, 7-fl oz tub

Farnam Swat Dog & Horse Fly Repellent, 7-fl oz tub

Rated 4.8 out of 5 stars
435
$15.97 Chewy Price
($2.29/fl oz)
Promo, New Customers Only: Spend $49+, get $25 eGift Card

Our ratings

Ease of Application

4.5/5
Great

Effectiveness

4.5/5
Great

Ingredients

4.5/5
Great

Longevity

4.5/5
Great

Is this fly spray right for my pet?

Top Ingredients

Piperonyl Butoxide, Butylcarbityl, 6-Propylpiperonyl, Ether And Related Compounds, Pyrethrins

Farm Animal Type

Horse

Health Feature

Skin & Coat Health
3
Absorbine UltraShield EX Insecticide, Kills & Repels Horse Fly Spray Refill, 32-fl oz bottle
Absorbine UltraShield EX Insecticide, Kills & Repels Horse Fly Spray Refill, 32-fl oz bottle
Absorbine UltraShield EX Insecticide, Kills & Repels Horse Fly Spray Refill, 32-fl oz bottle
Absorbine UltraShield EX Insecticide, Kills & Repels Horse Fly Spray Refill, 32-fl oz bottle
Absorbine UltraShield EX Insecticide, Kills & Repels Horse Fly Spray Refill, 32-fl oz bottle
Absorbine UltraShield EX Insecticide, Kills & Repels Horse Fly Spray Refill, 32-fl oz bottle

Absorbine UltraShield EX Insecticide, Kills & Repels Horse Fly Spray Refill, 32-fl oz bottle

Rated 4.7 out of 5 stars
445
$27.49 Chewy Price
Promo, New Customers Only: Spend $49+, get $25 eGift Card

Our ratings

Ease of Application

4.5/5
Great

Effectiveness

4.5/5
Great

Ingredients

4.5/5
Great

Longevity

4.4/5
Great

Is this fly spray right for my pet?

Top Ingredients

Permethrin, Pyrethrins, Piperonyl Butoxide

Farm Animal Type

Horse

Health Feature

Pest Control
4
Equiderma Neem & Aloe Natural Horse Spray, 32-fl oz bottle
Equiderma Neem & Aloe Natural Horse Spray, 32-fl oz bottle
Equiderma Neem & Aloe Natural Horse Spray, 32-fl oz bottle

Equiderma Neem & Aloe Natural Horse Spray, 32-fl oz bottle

Rated 4.6 out of 5 stars
320
$21.95 Chewy Price
($0.69/oz)
Promo, New Customers Only: Spend $49+, get $25 eGift Card

Our ratings

Ease of Application

4.5/5
Great

Effectiveness

4.4/5
Great

Ingredients

4.5/5
Great

Longevity

4.3/5
Great

Is this fly spray right for my pet?

Top Ingredients

Neem Oil, Neem Leaf, Citronella Oil, Eucalyptus Oil, Lavandin Grosso Oil

Farm Animal Type

Horse

Health Feature

Herbal Remedy, Pest Control, Skin & Coat Health
5
Martin's Permethrin 36.8% SFR Concentrate Termiticide & Insecticide, Pint
Martin's Permethrin 36.8% SFR Concentrate Termiticide & Insecticide, Pint

Martin's Permethrin 36.8% SFR Concentrate Termiticide & Insecticide, Pint

Rated 4.7 out of 5 stars
215
$37.24 Chewy Price
Promo, New Customers Only: Spend $49+, get $25 eGift Card

Our ratings

Ease of Application

4.5/5
Great

Effectiveness

4.5/5
Great

Ingredients

4.3/5
Great

Longevity

4.3/5
Great

Is this fly spray right for my pet?

Top Ingredient

36.8% Permethrin

Farm Animal Type

Horse, Cattle, Pig, Poultry

Health Feature

Pest Control
6
Starbar Quikstrike Fly Scatter Bait, 1-lb can
Starbar Quikstrike Fly Scatter Bait, 1-lb can
Starbar Quikstrike Fly Scatter Bait, 1-lb can
Starbar Quikstrike Fly Scatter Bait, 1-lb can
Starbar Quikstrike Fly Scatter Bait, 1-lb can

Starbar Quikstrike Fly Scatter Bait, 1-lb can

Rated 4.4 out of 5 stars
328
$14.99 Chewy Price
($14.99/lb)
Promo, New Customers Only: Spend $49+, get $25 eGift Card

Our ratings

Ease of Application

4.4/5
Great

Effectiveness

4.0/5
Great

Ingredients

4.2/5
Great

Longevity

4.0/5
Great

Is this fly spray right for my pet?

Top Ingredients

Active Ingredient: Dinotefuran 0.50%, Z-9 Triscosene 0.04%

Farm Animal Type

Horse, Cattle, Pig, Goat...

Health Feature

Pest Control
7
Ecovet Fly Repellent Horse Spray, 18-fl oz bottle
Ecovet Fly Repellent Horse Spray, 18-fl oz bottle
Ecovet Fly Repellent Horse Spray, 18-fl oz bottle
Ecovet Fly Repellent Horse Spray, 18-fl oz bottle
Ecovet Fly Repellent Horse Spray, 18-fl oz bottle
Ecovet Fly Repellent Horse Spray, 18-fl oz bottle
Ecovet Fly Repellent Horse Spray, 18-fl oz bottle
Ecovet Fly Repellent Horse Spray, 18-fl oz bottle
Ecovet Fly Repellent Horse Spray, 18-fl oz bottle

Ecovet Fly Repellent Horse Spray, 18-fl oz bottle

Rated 4.3 out of 5 stars
331
$28.95 Chewy Price
($1.61/fl oz)
Promo, New Customers Only: Spend $49+, get $25 eGift Card

Our ratings

Ease of Application

4.4/5
Great

Effectiveness

4.3/5
Great

Ingredients

4.3/5
Great

Longevity

4.1/5
Great

Is this fly spray right for my pet?

Top Ingredients

Octanoic Acid: 5.0% , Nonanoic Acid: 5.0% , Decanoic Acid: 5.0% , Other ingredients: 85.0%

Farm Animal Type

Horse

Health Feature

Pest Control
8
Espree Aloe Herbal Fly Repellant Horse Spray, 1-gallon
Espree Aloe Herbal Fly Repellant Horse Spray, 1-gallon
Espree Aloe Herbal Fly Repellant Horse Spray, 1-gallon
Espree Aloe Herbal Fly Repellant Horse Spray, 1-gallon
Espree Aloe Herbal Fly Repellant Horse Spray, 1-gallon
Espree Aloe Herbal Fly Repellant Horse Spray, 1-gallon
Espree Aloe Herbal Fly Repellant Horse Spray, 1-gallon

Espree Aloe Herbal Fly Repellant Horse Spray, 1-gallon

Rated 4.6 out of 5 stars
99
$79.49 Chewy Price
($79.49/gl)
Promo, New Customers Only: Spend $49+, get $25 eGift Card

Our ratings

Ease of Application

4.4/5
Great

Effectiveness

4.6/5
Excellent

Ingredients

4.6/5
Excellent

Longevity

4.3/5
Great

Is this fly spray right for my pet?

Lifestage

All Lifestages, Adult

Top Ingredients

Organic Aloe Vera, Sunscreen, Coat Conditioners

Farm Animal Type

Horse

Health Feature

Sun Protection, Pest Control
9
Farnam SimpliFly Feed-Thru Fly Control Pellets Horse Supplement, 3.75-lb bucket
Farnam SimpliFly Feed-Thru Fly Control Pellets Horse Supplement, 3.75-lb bucket
Farnam SimpliFly Feed-Thru Fly Control Pellets Horse Supplement, 3.75-lb bucket
Farnam SimpliFly Feed-Thru Fly Control Pellets Horse Supplement, 3.75-lb bucket
Farnam SimpliFly Feed-Thru Fly Control Pellets Horse Supplement, 3.75-lb bucket
Farnam SimpliFly Feed-Thru Fly Control Pellets Horse Supplement, 3.75-lb bucket
Farnam SimpliFly Feed-Thru Fly Control Pellets Horse Supplement, 3.75-lb bucket
Farnam SimpliFly Feed-Thru Fly Control Pellets Horse Supplement, 3.75-lb bucket

Farnam SimpliFly Feed-Thru Fly Control Pellets Horse Supplement, 3.75-lb bucket

Rated 4.7 out of 5 stars
511
$36.69 Chewy Price
($9.79/lb)
Promo, New Customers Only: Spend $49+, get $25 eGift Card

Our ratings

Ease of Application

4.5/5
Great

Effectiveness

4.5/5
Great

Ingredients

4.4/5
Great

Longevity

4.3/5
Great

Is this fly spray right for my pet?

Lifestage

All Lifestages, Adult

Top Ingredient

Diflubenzuron

Farm Animal Type

Horse

Food Form

Supplement, Feed
10
Spartan Mosquito Pro Tech Mosquito Killer, 2 count
Spartan Mosquito Pro Tech Mosquito Killer, 2 count
Spartan Mosquito Pro Tech Mosquito Killer, 2 count
Spartan Mosquito Pro Tech Mosquito Killer, 2 count

Spartan Mosquito Pro Tech Mosquito Killer, 2 count

Rated 4 out of 5 stars
259
$22.00 Chewy Price
($11.00/ea)
Promo, New Customers Only: Spend $49+, get $25 eGift Card

Our ratings

Ease of Application

3.9/5
Good

Effectiveness

4.2/5
Great

Ingredients

4.1/5
Great

Longevity

4.0/5
Great

Is this fly spray right for my pet?

Top Ingredient

Active Ingredient: Boric Acid 9.04%

Farm Animal Type

Horse

Health Feature

Pest Control

Frequently Asked Questions about Fly Sprays for Horses

What is the difference between on-horse fly sprays, feed-through fly control, and barn baits?

On-horse sprays and wipe-ons give immediate protection by repelling or killing insects on the coat, which is useful for turnout and riding. Feed-through options work through the manure to stop the fly life cycle, so they help reduce overall populations over time rather than discouraging contact. Barn baits are set in the environment to target adult flies around stalls and pens, which can lower the number of pests in high-traffic areas.

When would a wipe-on or ointment-style repellent be a better choice than a spray?

Wipe-on or ointment formulas are helpful for targeted areas like the face, ears, and other sensitive spots where you would not want to use a spray. They are also useful on windy days or for horses who dislike sprayers since you can apply them precisely where protection is needed. Many owners pair a wipe-on for delicate areas with a spray on the body for broader coverage.