10 Best Fly Sprays for Horses 2025: According to Reviews | Chewy

The 10 Best Fly Sprays for Horses

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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, 1-gallon bottle
Pyranha Wipe N' Spray Fly Protection Horse Spray, 1-gallon bottle
Pyranha Wipe N' Spray Fly Protection Horse Spray, 1-gallon bottle

Pyranha Wipe N' Spray Fly Protection Horse Spray, 1-gallon bottle

Rated 4.7 out of 5 stars
802
$74.95Chewy Price
($74.95/gl)
Promo, New Customers Only: Spend $49+, Get $20 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

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

Rated 4.8 out of 5 stars
318
$14.97Chewy Price
($2.14/fl oz)
Promo, New Customers Only: Spend $49+, Get $20 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

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, 128-fl oz bottle
Absorbine UltraShield EX Insecticide, Kills & Repels Horse Fly Spray Refill, 128-fl oz bottle
Absorbine UltraShield EX Insecticide, Kills & Repels Horse Fly Spray Refill, 128-fl oz bottle
Absorbine UltraShield EX Insecticide, Kills & Repels Horse Fly Spray Refill, 128-fl oz bottle
Absorbine UltraShield EX Insecticide, Kills & Repels Horse Fly Spray Refill, 128-fl oz bottle

Absorbine UltraShield EX Insecticide, Kills & Repels Horse Fly Spray Refill, 128-fl oz bottle

Rated 4.7 out of 5 stars
250
$77.95Chewy Price
($0.61/fl oz)
Promo, New Customers Only: Spend $49+, Get $20 eGift Card

Our ratings

Ease of Application

4.5/5
Great

Effectiveness

4.6/5
Excellent

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
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
168
$31.49Chewy Price
Promo, New Customers Only: Spend $49+, Get $20 eGift Card

Our ratings

Ease of Application

4.4/5
Great

Effectiveness

4.4/5
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

Cattle, Pig, Poultry, Horse

Health Feature

Pest Control
5
Equiderma Herbal Horse Spray, 1-gal
Equiderma Herbal Horse Spray, 1-gal

Equiderma Herbal Horse Spray, 1-gal

Rated 4.8 out of 5 stars
99
$89.99Chewy Price
($89.99/gl)
Promo, New Customers Only: Spend $49+, Get $20 eGift Card

Our ratings

Ease of Application

4.6/5
Excellent

Effectiveness

4.6/5
Excellent

Ingredients

4.7/5
Excellent

Longevity

4.5/5
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

Skin & Coat Health
6
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 4.2 out of 5 stars
257
$23.95Chewy Price
($1.34/fl oz)
Promo, New Customers Only: Spend $49+, Get $20 eGift Card

Our ratings

Ease of Application

4.4/5
Great

Effectiveness

4.3/5
Great

Ingredients

4.4/5
Great

Longevity

4.2/5
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
7
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 4.3 out of 5 stars
208
$8.99Chewy Price
($8.99/lb)
Promo, New Customers Only: Spend $49+, Get $20 eGift Card

Our ratings

Ease of Application

4.3/5
Great

Effectiveness

4.0/5
Great

Ingredients

4.3/5
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

Health Feature

Pest Control
8
Horse Health Products Horse Dewormer, 0.21-oz tube
Horse Health Products Horse Dewormer, 0.21-oz tube
Horse Health Products Horse Dewormer, 0.21-oz tube
Horse Health Products Horse Dewormer, 0.21-oz tube
Horse Health Products Horse Dewormer, 0.21-oz tube

Horse Health Products Horse Dewormer, 0.21-oz tube

Rated 4.8 out of 5 stars
60
$10.88Chewy Price
($51.81/oz)
Promo, New Customers Only: Spend $49+, Get $20 eGift Card

Our ratings

Ease of Application

4.8/5
Excellent

Effectiveness

4.6/5
Excellent

Ingredients

4.6/5
Excellent

Longevity

4.6/5
Excellent

Is this fly spray right for my pet?

Top Ingredient

ivermectin

Farm Animal Type

Horse

Health Feature

Digestive Health
9
Farnam Swat Original Fly Repellent Ointment Horse Supplement, 7-oz tub
Farnam Swat Original Fly Repellent Ointment Horse Supplement, 7-oz tub
Farnam Swat Original Fly Repellent Ointment Horse Supplement, 7-oz tub
Farnam Swat Original Fly Repellent Ointment Horse Supplement, 7-oz tub
Farnam Swat Original Fly Repellent Ointment Horse Supplement, 7-oz tub
Farnam Swat Original Fly Repellent Ointment Horse Supplement, 7-oz tub
Farnam Swat Original Fly Repellent Ointment Horse Supplement, 7-oz tub
Farnam Swat Original Fly Repellent Ointment Horse Supplement, 7-oz tub
Farnam Swat Original Fly Repellent Ointment Horse Supplement, 7-oz tub

Farnam Swat Original Fly Repellent Ointment Horse Supplement, 7-oz tub

Rated 4.8 out of 5 stars
153
$14.97Chewy Price
($2.14/oz)
Promo, New Customers Only: Spend $49+, Get $20 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?

Top Ingredients

Piperonyl Butoxide (Butylcarbityl, 6-Propylpiperonyl, Ether And Related Compounds), Pyrethrins, Di-N-Propyl Isocinchomeronate

Farm Animal Type

Horse

Health Feature

Itch & Redness Remedy
10
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
79
$79.49Chewy Price
($79.49/gl)
Promo, New Customers Only: Spend $49+, Get $20 eGift Card

Our ratings

Ease of Application

4.4/5
Great

Effectiveness

4.6/5
Excellent

Ingredients

4.7/5
Excellent

Longevity

4.5/5
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

Pest Control