---
product_id: 15302420
title: "SimpliFly Feed Through Fly Control for Horses 10 lbs, 160 Day Supply, EPA Approved, Palatable Pellets, Prevents Stable Flies and Manure Breeding"
brand: "farnam"
price: "$271.70"
currency: USD
in_stock: true
reviews_count: 8
category: "Farnam"
url: https://www.desertcart.us/products/15302420-simplifly-feed-through-fly-control-for-horses-10-lbs-160
store_origin: US
region: United States of America
---

# 160-day continuous protection 97-100% fly population reduction Made in the USA, trusted quality SimpliFly Feed Through Fly Control for Horses 10 lbs, 160 Day Supply, EPA Approved, Palatable Pellets, Prevents Stable Flies and Manure Breeding

**Brand:** farnam
**Price:** $271.70
**Availability:** ✅ In Stock

## Summary

> 🦄 Keep your stable fly-free and your horses happy—because every barn deserves the best!

## Quick Answers

- **What is this?** SimpliFly Feed Through Fly Control for Horses 10 lbs, 160 Day Supply, EPA Approved, Palatable Pellets, Prevents Stable Flies and Manure Breeding by farnam
- **How much does it cost?** $271.70 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.us](https://www.desertcart.us/products/15302420-simplifly-feed-through-fly-control-for-horses-10-lbs-160)

## Best For

- farnam enthusiasts

## Why This Product

- Trusted farnam brand quality
- Free international shipping included
- Worldwide delivery with tracking
- 15-day hassle-free returns

## Key Features

- • **Proudly Made in the USA:** Quality you can trust, backed by the Farnam satisfaction guarantee.
- • **Effortless Daily Defense:** Palatable pellets blend seamlessly with feed—no sprays, no hassle.
- • **Long-Lasting Barn Protection:** One 10 lb bucket provides a 160-day supply for sustained fly control.
- • **Veterinarian-Recommended & Trusted:** 20+ years of proven results and safety for horses of all ages.
- • **Break the Fly Cycle Before It Starts:** EPA-approved larvicide targets fly larvae in manure for proactive control.

## Overview

FarnamSimpliFly Feed Through Fly Control is a veterinarian-recommended, EPA-approved larvicide pellet that interrupts the stable fly life cycle by targeting larvae in manure. Designed for easy daily feeding, it offers up to 160 days of continuous protection, reducing fly populations by up to 100%. Made in the USA and trusted for over 20 years, it’s the hassle-free solution for healthier, happier horses and cleaner barns.

## Description

When flies are a menace in your stable, it’s time to target them at their source – your horse’s manure. If not treated, the manure from one horse has the potential to produce tens of thousands of flies in a single day. Introduce SimpliFly Feed-Thru Fly Control to your horse’s daily diet, and suddenly you’re turning the favorite breeding grounds of stable and house flies into a No Fly Zone. When fed daily, SimpliFly Feed-Thru Fly Control breaks the fly lifecycle by preventing fly larvae from developing in a horse’s manure. This fly growth regulator is made without organophosphates and will pass through your horse’s body unabsorbed. The feed will instead excrete the active ingredient diflubenzuron into their manure, preventing it from being a viable breeding ground. This product can be effectively started anytime during fly season, but for best results, beginning daily feeding in early spring before fly season is optimal. SimpliFly Feed-Thru Fly Control is a highly palatable mixture that your horse will readily eat and easily mixes in with their daily feed. As part of an integrated, pest management program, you can see a significant decline in this season’s fly population. Keep your stable happy and target the fly problem at its source with SimpliFly Feed-Thru Fly Control. Bugs don’t fly with Farnam, your partner in horse care.

Review: IGR not insecticide. - Works on house flies and stable flies. Works really well too. Gnats and horse flies nope. Gnats still are in abundance though maybe have declined but seems they are persistent. Quite possibly has knocked down the gnats. This is all I really see covering the horse manure so I’m hopeful that several season/ years of this will steadily drop their numbers. Summer of 2025 has been our first try of this. And we started late in the season to see a noticeable difference in the house and stable flies. Will probably stop feeding come first frost in NC here and stock up for spring and summer. Highly recommend.
Review: For us a 95% reduction of on farm flies - Awesome product. 2 weeks after we started using it we noticed the flies were gone. Saves a lot of money and hassle of using fly spray daily that never really worked. For us it reduced our on farm fly population by 95%. It's wonderful be able to be outside around the horses and yard, and don't forget the barn without the flies attacking us all the time. It also pays for itself by not buying gallon after gallon of fly spray.

## Features

- Powerful, Proven Fly Control from the Inside Out---Eliminate stable flies before they even hatch—SimpliFly targets fly larvae in manure with an EPA-approved larvicide, stopping the cycle before it starts.
- Trusted by Horse Owners for 20+ Years---SimpliFly is a veterinarian-recommended feed-thru solution that’s safe for horses of all ages and proven to reduce fly populations when fed daily.
- Palatable Pellets That Horses Actually Eat---Easy-to-feed pellets blend seamlessly with your horse’s grain—no need for messy sprays or complicated application routines.
- Multiple Sizes for Every Barn---Available in convenient 3.75 lb and 10 lb buckets to suit every horse owner’s needs—perfect for single horses or larger herds.
- Made in the USA + Backed by the Farnam Guarantee---Proudly manufactured in the USA with quality you can trust. Your satisfaction is 100% guaranteed.
- Visible Results You Can Count On---Start seeing fewer flies in just 4-6 weeks with daily use. Ideal for barns, pastures, and dry lots — no sprays required.
- Larvastop, containing fly growth regulator Dimilin, breaks the fly life cycle
- Reduces fly populations by 97-100%.
- Highly palatable - just add to feed

## Product Details

- **Brand:** Farnam
- **Flavor:** Unflavored
- **Age Range (Description):** All Life Stages
- **Item Form:** Stick
- **Specific Uses For Product:** Outdoor

## Images

![SimpliFly Feed Through Fly Control for Horses 10 lbs, 160 Day Supply, EPA Approved, Palatable Pellets, Prevents Stable Flies and Manure Breeding - Image 1](https://m.media-amazon.com/images/I/71ebZMz2nAL.jpg)

## Questions & Answers

**Q: How long does 10 pds last one horse?**
A: 10 pounds will last about 4 to 5 months per horse.

**Q: how young of a foal can be fed this please?**
A: We recommend first consulting your vet. Simplifly should be fine for foals that are 300 lbs. or more.

**Q: Why can't this be shipped to calif.  Always ordered and now it says it can’t be shipped to calif.**
A: Must be some kind of new regulation, I was able to buy it the last time I ordered it.

**Q: Why not feed to "horses intended for slaughter?" Also...who raises horses intended for slaughter, anyway?**
A: correct if the horses are intended for slaughter and are supposed to be shipped from the  USA to Mexico for slaughter (horse slaughter is illegal in the USA) then these horses not only cannot have had certain vaccinations but they also cannot have been treated with various substances to prevent flies and worms. As to your question who raises horses for slaughter, plenty of 'breeders' in the USA do that but they would never admit to it. You can research for example the different registries for horses and draw your own conclusions.

## Customer Reviews

### ⭐⭐⭐⭐⭐ IGR not insecticide.
*by W***N on September 6, 2025*

Works on house flies and stable flies. Works really well too. Gnats and horse flies nope. Gnats still are in abundance though maybe have declined but seems they are persistent. Quite possibly has knocked down the gnats. This is all I really see covering the horse manure so I’m hopeful that several season/ years of this will steadily drop their numbers. Summer of 2025 has been our first try of this. And we started late in the season to see a noticeable difference in the house and stable flies. Will probably stop feeding come first frost in NC here and stock up for spring and summer. Highly recommend.

### ⭐⭐⭐⭐⭐ For us a 95% reduction of on farm flies
*by D***G on August 13, 2025*

Awesome product. 2 weeks after we started using it we noticed the flies were gone. Saves a lot of money and hassle of using fly spray daily that never really worked. For us it reduced our on farm fly population by 95%. It's wonderful be able to be outside around the horses and yard, and don't forget the barn without the flies attacking us all the time. It also pays for itself by not buying gallon after gallon of fly spray.

### ⭐⭐⭐⭐⭐ works well with these other 2 products
*by C***N on August 16, 2023*

So we started Simplifly in Spring then added the Natural Fly Extermiator bags all around the horses and donkeys then wrapped poles and all of our trash cans in Giant Fly glue tray rolls by Catchmaster. Not sure which is working the best but I know all 3 together is amazing. Today was 100 and not but one fly while I was mucking out the horses. We have both horses and donkeys and we are all so amazed. The fly paper has to be changed almost every day, but once under control maybe every few days. The paper catches so many flies it's the craziest think. We are all so happy at the ranch.

## Frequently Bought Together

- Farnam SimpliFly Feed Through Fly Control for Horses 10 lbs, 160 Day Supply, EPA Approved, Palatable Pellets, Prevents Stable Flies and Manure Breeding
- Farnam Equi-Spot, Horse Fly Control, Long-lasting Protection, 6 Applications, 12-Week Supply for One Horse
- Farnam Repel-X pe Concentrated Fly Spray for Horses, Just Add Water 16 Ounces

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*Product available on Desertcart United States of America*
*Store origin: US*
*Last updated: 2026-02-21*