Farnam Repel-X PE Concentrated Fly Spray for Horses, 16-fl oz bottle

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About This Item

Details

  • Effective spray helps to repel horn flies, house flies, stable flies, horse and deerflies, gnats and mosquitoes, and kills on contact.
  • 1 quart of concentrate makes 8 quarts of ready-to-use fly spray.
  • Just add water to create fly spray.
  • Spray or wipe on your horse, stalls and around the barn.
  • Easy to use.

Ingredients

Instructions

Learn More About Farnam From Our Team of Experts

Reliable Defense Against Flies

Farnam Repel-X Insecticide & Repellent and Repel-X pe Emulsifiable Fly Spray help keep insects away from your horse’s face and body and act as a safeguard against common types of flies. Available in ready-to-use and concentrate options.

Multi-Purpose Defense

Repel-X Insecticide & Repellent comes ready to kill and repel six fly species, mosquitoes, gnats, ticks, fleas, chiggers and lice. The water-based formula can be used as a spray or as a wipe to protect your horse, dog, and their premises.

Concentrated Protection

Repel-X pe Emulsifiable Fly Spray is the high-value, do-it-yourself solution for reliable fly protection. Simply add water to make a powerful and affordable solution that keeps flies off your horse and out of your stable.

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.

About Farnam

For over 75 years, Farnam has been a leader in equine care. Their mission is to continually strengthen the bond between horses and humans with simple, effective and innovative solutions that help make every moment of your life together better.

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Questions & Answers

7 Customer Questions

this product works on donkeys. i have some miniture donkeys

Answer by Chewy • May 18, 2021
This spray is safe to use on donkeys, including miniature ones.

Will this kill wood bees ? they are eating my deck up.It safe to use around pets & plants?

Answer by Chewy • May 17, 2018
The spray would only work on flies, gnats, mosquitoes and ticks.

Can this be used on livestock?

Answer by Chewy • Jun 23, 2019
This spray shouldn't be used on livestock.

Is this safe for dogs?

Answer by Chewy • Apr 23, 2025
This concentrated fly spray is formulated for horses only.
Reviews
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4.5
Rated 4.5 out of 5 stars
287 Ratings
Terms & Conditions

101 Customer Reviews

Rated 5 out of 5 stars
By Vicky on Dec 18, 2025

Stay away flys!!

I just used this all summer, I filled a 3 gallon sprayer and mixed it! so easy and worked as it advertised but I did use it daily not weekly

I just used this all summer, I filled a 3 gallon sprayer and mixed it! so easy and worked as it advertised but I did use it daily not weekly

Rated 5 out of 5 stars
By Stacey on Dec 23, 2025

Great product

Excellent concentrate so good for use in early Spring and also full Summer - just change the dilution. Really keeps the bugs away.

Excellent concentrate so good for use in early Spring and also full Summer - just change the dilution. Really keeps the bugs away.

Rated 5 out of 5 stars
By Morgan on Nov 4, 2025

Amazing Value

I love buying the concentrate fly spray. It really doesn’t take that much time to fill a bottle back up and it saves a lot of space in the tack room too.

I love buying the concentrate fly spray. It really doesn’t take that much time to fill a bottle back up and it saves a lot of space in the tack room too.

Rated 1 out of 5 stars
By Emily on Sep 28, 2025

Doesn't even work

I thoroughly spray, then 5 minutes later he's stomping at flies again. Do another thorough spray, and again 5 minutes later... I always have to eventually give

I thoroughly spray, then 5 minutes later he's stomping at flies again. Do another thorough spray, and again 5 minutes later... I always have to eventually give in and borrow someone else's spray.

Rated 5 out of 5 stars
By Yvonne on Dec 5, 2025

Fast and free delivery

Amazing stuff, works great, love that I can buy a small container and mix it up to one gallon

Amazing stuff, works great, love that I can buy a small container and mix it up to one gallon

Rated 3 out of 5 stars
By Carol on Sep 15, 2025

Some leakage inside the shipping bag, but bottle wasn't smashed

This doesn't seem to work as well, as the Pro force, I ordered last time. It helps though. Bot & biting flies pay no attention to this spray, even when excess

This doesn't seem to work as well, as the Pro force, I ordered last time. It helps though. Bot & biting flies pay no attention to this spray, even when excess is used

Rated 2 out of 5 stars
By Alethea on Aug 30, 2025

Yuck!

This stuff smells awful! Also does nothing to deter the flys. My horse were miserable and covered in flys. I gave it a try because it was on sale. Not worth it!

This stuff smells awful! Also does nothing to deter the flys. My horse were miserable and covered in flys. I gave it a try because it was on sale. Not worth it!!

Rated 4 out of 5 stars
By DW on Jun 30, 2025

Quantity description misleading

I thought this would make 8 qts. of spray because the description says "1 quart of concentrate makes 8 quarts of ready-to-use fly spray." It fails to point out that

I thought this would make 8 qts. of spray because the description says "1 quart of concentrate makes 8 quarts of ready-to-use fly spray." It fails to point out that this is only a half qt. bottle of concentrate (16 oz.), so this purchase was only for 4 qts. (1 gal.) Very misleading.

Rated 2 out of 5 stars
By Dani on Oct 6, 2025

It doesn’t seem to work

Used this for a few days. I can’t say it does much, if anything. I’d recommend better spray.

Used this for a few days. I can’t say it does much, if anything. I’d recommend better spray.

Rated 5 out of 5 stars
By Andrew on Jul 19, 2025

Actually Works

I've tried basically everything the local farm big box store sells and none of those sprays do much of anything. This one works well even for horse flies. I'm in

I've tried basically everything the local farm big box store sells and none of those sprays do much of anything. This one works well even for horse flies. I'm in Southern NH and the biting bugs are bad.