---
product_id: 16597782
title: "SimpliFly Feed Through Fly Control Daily Supplement for Horses, 3.75 lb, EPA Approved Palatable Pellets, Prevents Stable Flies in Manure and Break and Prevents the Fly Life Cycle, 60 Day Supply"
brand: "farnam"
price: "AR$172111"
currency: ARS
in_stock: true
reviews_count: 8
category: "Farnam"
url: https://www.desertcart.com.ar/products/16597782-simplifly-feed-through-fly-control-daily-supplement-for-horses-3
store_origin: AR
region: Argentina
---

# 60-day continuous protection 97% fly population reduction EPA-approved & science-backed SimpliFly Feed Through Fly Control Daily Supplement for Horses, 3.75 lb, EPA Approved Palatable Pellets, Prevents Stable Flies in Manure and Break and Prevents the Fly Life Cycle, 60 Day Supply

**Brand:** farnam
**Price:** AR$172111
**Availability:** ✅ In Stock

## Summary

> 🦄 Keep your stable fly-free and your horses happy—because peace of mind is the best feed!

## Quick Answers

- **What is this?** SimpliFly Feed Through Fly Control Daily Supplement for Horses, 3.75 lb, EPA Approved Palatable Pellets, Prevents Stable Flies in Manure and Break and Prevents the Fly Life Cycle, 60 Day Supply by farnam
- **How much does it cost?** AR$172111 with free shipping
- **Is it available?** Yes, in stock and ready to ship
- **Where can I buy it?** [www.desertcart.com.ar](https://www.desertcart.com.ar/products/16597782-simplifly-feed-through-fly-control-daily-supplement-for-horses-3)

## 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

- • **Effortless Daily Routine:** Just one scoop a day keeps your stable a fly-free zone—perfect for busy horse owners.
- • **Proven Legacy of Excellence:** Backed by Farnam’s 75+ years of equine care expertise and thousands of satisfied users.
- • **Clean & Chemical-Free Control:** No organophosphates means safer for your horse, barn, and environment.
- • **Trusted Science, Trusted Safety:** EPA-approved formula ensures effective fly control without harmful chemicals.
- • **Break the Fly Cycle Before It Starts:** Targets larvae in manure to slash fly populations by up to 97% with daily use.

## Overview

Farnam SimpliFly Feed-Thru Fly Control is a palatable, EPA-approved daily supplement designed to disrupt the fly life cycle by targeting larvae in horse manure. Providing up to 97% reduction in stable and house flies, it offers a safe, chemical-free solution without organophosphates. Available in convenient sizes, SimpliFly is trusted by professionals and horse owners alike to maintain a cleaner, healthier stable environment throughout fly season.

## Description

The most effective way to control flies around horses is to stop them at the source before they ever become adult flies. Left untreated, manure from a single horse can produce thousands of flies in a single day. Farnam SimpliFly Feed-Through Fly Control is a palatable alfalfa-based pellet designed to provide reliable fly control for horses by interrupting the fly life cycle where flies breed. The active ingredient diflubenzuron passes through the horse unabsorbed and deposits in manure, preventing fly larvae from developing into adult flies. Because SimpliFly works in manure rather than on the horse, it provides barn fly control and stable fly reduction without sprays, wipes, or topical treatments. Safe for daily use in all horse breeds and formulated without organophosphates, SimpliFly Feed Thru Fly Control mixes easily into your horse’s regular feed. For best results, begin feeding in early spring before flies appear and continue through summer and fall to support consistent horse fly control in barns, stalls, paddocks, and pastures. For complete fly management, combine feed-through fly control with topical fly sprays, fly masks, and other barn fly control methods to help protect horses throughout fly season.

Review: It works and is cost effective - It works. I’ll use it again next summer! I had a 95% reduction of flies with this and weekly spray down in my coops.
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

- Feed-Through Fly Control for Horses: SimpliFly breaks and prevents the fly life cycle in manure, helping reduce stable fly populations and providing reliable fly control for horses in barns, stalls, and pastures
- Stops Flies Where they Breed: The active ingredient diflubenzuron passes through the horse unabsorbed and works directly in manure to prevent fly larvae from developing into adult flies
- Safe for Daily Use in All Horse Breeds: Add palatable alfalfa-based pellets to your horse's daily feed for consistent fly control in stalls, pastures, paddocks and dry lots
- Season-Long Fly Population Reduction: Begin feeding in early spring before flies appear and continue through summer and fall to support ongoing barn fly control and stable fly prevention
- Feed Thru Fly Control Supplement: SimpliFly works best alongside topical fly sprays and physical barriers like fly masks for integrated, whole-barn pest management
- Farnam Equine Supplement in 3.75 lb (60-Day Supply) and 10 lb (160-Day Supply) Sizes: SimpliFly feed-through fly supplement is packaged in convenient buckets for easy daily feeding and tack room storage

## Technical Specifications

| Specification | Value |
|---------------|-------|
| ASIN | B000HHM4TQ |
| ASIN  | B000HHM4TQ |
| Active Ingredients | SimpliFly® with LarvaStop™ contains 0.24% Diflubenzuron (Dimilin®*) (CAS# 35367-38-5). Feed ingredients: Wheat Middlings, Dehydrated Alfalfa Meal, Calcium Carbonate, Sodium Chloride, Calcium Propionate (preservative). |
| Allergen Information | Yam Free |
| Best Sellers Rank | #7,749 in Pet Supplies ( See Top 100 in Pet Supplies ) #10 in Horse Fly Repellents |
| Brand Name | Farnam |
| Customer Reviews | 4.6 4.6 out of 5 stars (1,427) |
| Date First Available  | October 15, 2006 |
| Department  | Pets |
| Flavor | Flavorless |
| Global Trade Identification Number | 00086621001640 |
| Included Components | Farnam SimpliFly Feed Through Fly Control Daily Supplement for Horses, 3.75 lb, EPA Approved Palatable Pellets, Prevents Stable Flies in Manure and Break and Prevents the Fly Life Cycle, 60 Day Supply |
| Is Discontinued By Manufacturer  | Yes |
| Item Form | Pellet |
| Item Type Name | Farnam SimpliFly Feed-Thru Fly Control |
| Item Weight | 3.75 Pounds |
| Item model number  | 100515881 |
| Manufacturer | Central Garden & Pet |
| Manufacturer  | Central Garden & Pet |
| Manufacturer Part Number | 100515881 |
| Model Number | 100515881 |
| Number of Items | 1 |
| Pet Type | Horse |
| Product Benefits | Breaks fly life cycle, reduces adult fly populations |
| Product Dimensions  | 5 x 6.5 x 7.5 inches; 3.75 Pounds |
| Specific Uses For Product | Fly Control |
| Target Species | Horse |
| UPC | 086621001640 |
| Unit Count | 60 Ounce |
| Volume | 0.45 Gallons |
| Warranty Description | Call with comments or questions: 800-234-2269 |

## Product Details

- **Brand:** Farnam
- **Flavor:** Flavorless
- **Item Form:** Pellet
- **Item Weight:** 3.75 Pounds

## Images

![SimpliFly Feed Through Fly Control Daily Supplement for Horses, 3.75 lb, EPA Approved Palatable Pellets, Prevents Stable Flies in Manure and Break and Prevents the Fly Life Cycle, 60 Day Supply - Image 1](https://m.media-amazon.com/images/I/71o00lzoHOL.jpg)

## Available Options

This product comes in different **Size** options.

## Questions & Answers

**Q: does it works for cows?**
A: I don’t think so. Cows are ruminates and horses aren’t.

**Q: Why won't it ship to my California address? What am I missing? I just bought one at the local Tractor Supply...here in Cali...**
A: I'm not sure what the answer is, but I have noticed there are numerous items I have ordered that are not shipped to California for different reasons.  Sorry I could not give you a more definite reason.

**Q: I lost the little measuring cup.  Can someone tell me exactly how much it holds when it is full?**
A: It looks to be about 1/8 ounce.

**Q: Hi, do you have a product called ralone duo top or some other product to cattle weight gain?**
A: no

## Customer Reviews

### ⭐⭐⭐⭐⭐ It works and is cost effective
*by K***G on January 16, 2026*

It works. I’ll use it again next summer! I had a 95% reduction of flies with this and weekly spray down in my coops.

### ⭐⭐⭐⭐⭐ 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.

### ⭐⭐⭐⭐⭐ 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.

## Frequently Bought Together

- Farnam SimpliFly Feed Through Fly Control for Horses, Breaks the Fly Life Cycle, Pellets, 3.75 Pound Bucket, 60 Day Supply for One Horse
- Farnam Repel-X pe Concentrated Fly Spray for Horses, Just Add Water 16 Ounces
- Farnam Repel-X Ready-To-Use Fly Spray, Insecticide And Repellent For Horses And Dogs, 32 Fluid Ounces, 1 Quart Bottle With Trigger Sprayer

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---

*Product available on Desertcart Argentina*
*Store origin: AR*
*Last updated: 2026-05-08*