Farnam Mosquito Halt Spray Horse Insect Repellant, 1-gal bottle

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About This Item

Details

  • Water-based fly repellent is a fresh alternative for pest control.
  • Repels horn, stable, house, horse and deer flies plus mosquitoes and gnats.
  • Alcohol-free formula won’t irritate sensitive skin.
  • Contains citronella oil, clove oil, mint oil and thyme oil.
  • Free of preservatives, additives or artificial colors.

Ingredients

Instructions

Learn More About Farnam From Our Team of Experts

About Farnam Mosquito Halt Repellent Spray for Horses

Stop the Biting

Protect your horse against diseases commonly carried by mosquitoes and other flying pests. Ready-to-use formula, no mixing or diluting required. Available in 32 oz. spray and 128 oz. gallon refill.

Available in a Variety of Sizes

Both Repel-X Insecticide & Repellent and Repel-X pe Emulsifiable Fly Spray are available in a range of sizes to cater to different needs, whether for small-scale use on individual animals or larger operations that require bulk quantities.

Defend Against Mosquito-carried Disease

Help fight against diseases like West Nile virus, Eastern equine encephalomyelitis, and Western equine encephalomyelitis by keeping mosquitoes off your horse.

Double Protection

Mosquito Halt Repellent Spray is formulated with two repellents and two insecticides for maximum protection. Stop the buzzing and experience quick knockdown of mosquitoes, gnats, face flies, stable flies, house flies, mites, chiggers, and lice.

About Farnam

For over 75 years, Farnam has been a leader in equine care. Their mission has always been to strengthen the bond between horses and humans with simple, effective, and innovative solutions. Choose Farnam horse products to help make every moment of your time together happier, healthier, and more enjoyable.

Shop Farnam

Questions & Answers

2 Customer Questions


Is it safe for foals a few days old?

Answer by ChewyJul 09, 2025
This is safe for foals when used as intended.

Is this product safe for dogs?

Answer by ChewyNov 11, 2023
This treatment is intended for horses, ponies and foals and should not be used on dogs.
4.8
Rated 4.8 out of 5 stars
109 Ratings

35 Customer Reviews



Rated 5 out of 5 stars
By Tina on Jan 12, 2026

This works great!

I've never been impressed with equine insect repellants until I discovered Mosquito Halt. At a layover I was unaware there was a problem with mosquitos and in the

I've never been impressed with equine insect repellants until I discovered Mosquito Halt. At a layover I was unaware there was a problem with mosquitos and in the morning discovered my horse was bitten all over. I immediately bought the product it. My horse seemed to find relief (in comfort) when the spray was applied, and it WORKS. Only repellant I use now.


Rated 5 out of 5 stars
By Rita on Jan 15, 2026

Definitely deters mosquitoes!

Keeps mosquitoes and sand gnats at bay during turnouts and when riding here in the Lowcountry of SC.

Keeps mosquitoes and sand gnats at bay during turnouts and when riding here in the Lowcountry of SC.


Rated 5 out of 5 stars
By Maile on Sep 29, 2025

One of the best

Have used this for over 10 years, probably about 15 now, and it’s always been great. The smell is wonderful and it isn’t oily on the horse, it works for flies, mosquitos

Have used this for over 10 years, probably about 15 now, and it’s always been great. The smell is wonderful and it isn’t oily on the horse, it works for flies, mosquitos and gnats. I alternate between this and endure or use both when flies are bad


Rated 3 out of 5 stars
By Diane on Sep 9, 2025

Love the product, Dislike that you waste product

Works great but need to redesign the pour spout ( like Endure’s product). Doesn’t matter if you use a funnel, you spill and waste the product - ugh!

Works great but need to redesign the pour spout ( like Endure’s product). Doesn’t matter if you use a funnel, you spill and waste the product - ugh!


Rated 5 out of 5 stars
By Beth on Aug 8, 2025

Best insect repellent for horses - works for flies!

I first tried this product because we have a lot of mosquitos at night. Quickly realized that it is also the best fly repellent I have every used. Even keeps the

I first tried this product because we have a lot of mosquitos at night. Quickly realized that it is also the best fly repellent I have every used. Even keeps the "B2 Bombers" from even landing!


Rated 5 out of 5 stars
By Beverly on Sep 11, 2025

Packaged well, delivered quickly

Mosquito Halt is really good. It works great for flies in case you didn’t know. My go to after a bath, it’s not heavy and oily.

Mosquito Halt is really good. It works great for flies in case you didn’t know. My go to after a bath, it’s not heavy and oily.


Rated 5 out of 5 stars
By Carolyn on Oct 21, 2025

Helps to slow the flies down

Flies aren't bothering too bad but still have allergy causing gnats.

Flies aren't bothering too bad but still have allergy causing gnats.


Rated 5 out of 5 stars
By Heather on Jun 29, 2025

Farnam product

I’ve used this repellant for years. It works great on my horses. Ticks, mosquitoes, and several different flies are all repelled or die when sprayed. Very happy

I’ve used this repellant for years. It works great on my horses. Ticks, mosquitoes, and several different flies are all repelled or die when sprayed. Very happy you carried it in the gallon size.


Rated 5 out of 5 stars
By Lana on Aug 18, 2025

Smell

It smells better than most fly sprays. I only have to spray it on my horses every other day.

It smells better than most fly sprays. I only have to spray it on my horses every other day.


Rated 5 out of 5 stars
By Judy on Jul 10, 2025

Really works

My 34 year old Mare has sensitivity to lots of fly sprays. Thank goodness this is not one of them because it really works!!!!

My 34 year old Mare has sensitivity to lots of fly sprays. Thank goodness this is not one of them because it really works!!!!