Best Fly Repellent for Dogs and Horses: Top Picks
Finding reliable fly repellents that work for both dogs and horses can be challenging. The following selections are designed to deter a variety of pests while being easy to apply and fade-resistant in outdoor conditions. Each product below is suitable for use on horses, dogs, and premises, offering options from water-based formulas to sweat-resistant blends. Review the features to determine the best match for your needs.
| Product | Brand | Format | Key Benefit |
|---|---|---|---|
| Farnam Repel-X Insecticide & Repellent Water-based Fly Spray | Farnam | 32 oz Spray | Multi-species protection; ready-to-use |
| Absorbine UltraShield EX 32oz Sprayer | Absorbine | 32 oz Sprayer | Kills & repels 70+ species; weatherproof |
| Farnam Roll-On Fly Repellent | Farnam | 2 oz Roller Ball | Targeted application around nose, eyes, ears |
| Farnam Endure Sweat-Resistant Fly Spray | Farnam | 32 oz Spray | Long-lasting protection through sweat and rain |
| Absorbine UltraShield Green All-Natural | Absorbine | 32 oz Spray | Botanical oils; eco-friendly formula |
Farnam Repel-X Insecticide & Repellent

Farnam Repel-X is a water-based spray designed to kill and repel six common fly species, including stable, horse, face, deer, house, and horn flies, along with mosquitoes, gnats, ticks, fleas, chiggers, and lice. The formulation is ready-to-use and claims to leave no greasy residue, making it convenient for frequent application around horses and dogs. Its multi-purpose nature supports protection for animals and premises with a single bottle, which can simplify care routines for households, barns, and outdoor areas.
Absorbine UltraShield EX 32oz Sprayer

Absorbine UltraShield EX 32oz Sprayer provides protection against 70+ insect species, including flies, mosquitoes, ticks, gnats, and fleas. The product emphasizes weatherproof performance for up to 17 days with UltraBond technology and offers a ready-to-use, water-based formula suitable for horses, ponies, dogs, barns, or on premises. This option is designed for users seeking long-lasting repellent and broad-spectrum insect control without mixing.
Farnam Roll-On Fly Repellent

Farnam Roll-On Fly Repellent is a convenient 2-ounce roll-on designed to repel house, stable, face, and horn flies. It’s intended for precise application around sensitive areas such as the nose, eyes, ears, mouth, and wounds. The roller-ball design enables easy, targeted usage, useful for quick touch-ups during rides or while grooming animals. It aligns with routine care where localized protection is desired and reduces the likelihood of over-application.
Farnam Endure Sweat-Resistant Fly Spray

Endure Sweat-Resistant Fly Spray is designed to defend horses by staying active through sweat and wet weather. The formula aims to prevent exposure to deer ticks that may carry Lyme disease and remains effective for up to 14 days. It features multiple active ingredients to maintain protection in challenging climate conditions, making it a practical choice for outdoor barns, riding arenas, and paddocks where dogs and horses share spaces.
Absorbine UltraShield Green All-Natural

UltraShield Green All-Natural uses seven essential botanical oils to repel and control pests. This eco-friendly option emphasizes a botanical scent while offering protection against biting flies, mosquitoes, ticks, and gnats. It is marketed as a safer alternative for households prioritizing natural ingredients, though performance can vary with environmental conditions and exposure levels. The product balances effectiveness with a focus on environmental safety and a less aggressive scent profile.
Buying Guide
- Protected species and usage scope: Choose formulas labeled for both dogs and horses if you plan to treat pets and livestock together. Look for multi-species protections when you want one product for barns, kennels, and paddocks.
- Active ingredients and duration: Sweat-resistant or weatherproof options often provide longer-lasting protection in outdoor conditions. Note how long protection claims last and whether reapplication is necessary after rain or exercise.
- Formulation and application method: Water-based sprays are typically easy to apply and less greasy, while roll-ons offer targeted, precise application. Sprayers may deliver even coverage for larger areas, whereas wipes or roll-ons are convenient for sensitive spots.
- Environmental and safety considerations: All-natural or botanical formulations may appeal to families seeking eco-friendly options, but check for efficacy in high-pest environments. Consider skin sensitivity for dogs and horses and avoid overuse around eyes, nose, and wounds.
- Practical use scenarios: For stable and riding environments, a longer-lasting spray can reduce reapplication during daily routines. In homes with multiple pets, a barrier between indoors and outdoors can help minimize pest intrusion.
- Cost and convenience: Compare bottle size, ready-to-use design, and the need for mixing. A larger bottle with longer protection per application can offer better long-term value for barns and kennels.
- Storage and safety: Store away from heat and moisture, keep out of reach of children, and follow label directions for safe use on animals with underlying skin conditions or wounds.