Deer flies can be persistent, but choosing an effective bug spray can help protect pets, people, and outdoor spaces. This guide highlights five top picks designed to target deer flies and other common pests. Each product offers unique advantages—from plant-based formulations to professional-grade repellents—so you can select a solution that fits your needs, whether you’re at home, on a farm, or outdoors. Below you’ll find a quick product snapshot, followed by detailed sections to help you compare features, application methods, and usage contexts.
| Product | Brand | Type | Size | |
|---|---|---|---|---|
| Farnam Repel-X Insecticide & Repellent | Farnam | Water-based spray | Repels & Kills deer flies, horse flies, and more | 32 Ounces |
| Repel 100 Insect Repellent | Repel | Pump spray | High-DEET protection for extended outdoors | 4 Ounces |
| Zevo Flying Insect Killer Spray | ZEVO | Spray for indoor/outdoor use | Flies, gnats, mosquitoes with essential-oil base | 2 Bottles Included |
| Sawyer Permethrin Insect Repellent | Sawyer | Clothing and gear spray | Repels ticks and other pests on fabrics | 24 Ounces |
| Raid Flying Insect Spray | Raid | Outdoor/indoor spray | Eliminates flies and other flying insects on contact | 18 Ounces |
Note: This selection emphasizes products commonly used against deer flies and related pests, with attention to safety, ease of use, and effectiveness in varied settings—from home yards to barns and camping environments.
Farnam Repel-X Insecticide & Repellent Water-based Fly Spray

Repel-X offers a water-based formula designed to kill and repel multiple pests, including deer flies on premises and animals. It is described as safe for use around people and pets when used as directed, with botanical elements and a fresh scent. The product emphasizes quick action and a non-greasy residue, making it suitable for outdoor use near livestock or pets.
Repel 100 Insect Repellent
Repel 100 Insect Repellent, Pump Spray, 4-Fluid Ounces, 10-Hour Protection

Repel 100 delivers high-level protection with 98.11% DEET for severe insect conditions. It forms a barrier against mosquitoes, ticks, gnats, biting flies, and other pests, offering up to 10 hours of protection. This makes it suitable for manual fieldwork, outdoor recreation, and areas with high deer fly activity.
Zevo Flying Insect Killer Spray
Zevo Flying Insect Killer Spray – Bug Spray for Home Use

Zevo uses essential oils, rosemary and cornmint, delivering a fast-acting solution that kills on contact with minimal residue. It is marketed for indoor and outdoor use and emphasizes plant-based oils that are generally safer for pets and people when used as directed. This makes it a convenient option for quick deer fly management around patios or barns.
Sawyer SP657 Premium Permethrin Insect Repellent

Permethrin-treated clothing and gear provide long-lasting protection, with a formulation that bonds to fabrics for weeks or multiple washings. It does not target skin directly, reducing bite risk from deer flies when applied to clothing. It is fragrance-free and designed for outdoor use, making it suitable for camping, hiking, or farm work where insect exposure is high.
Raid Flying Insect Spray
Raid Flying Insect Spray, Outdoor Fresh Scent

Raid Flying Insect Spray offers fast-acting contact kill for a range of flying insects, including flies. It is intended for both indoor and outdoor use and is designed to provide quick relief in areas experiencing deer fly activity. The product emphasizes broad-spectrum control and ease of use in yard or shelter environments.
Buying Guide: Key Purchase Considerations
Choosing the right bug spray depends on context, target pests, and safety needs. Consider the following factors to compare options:
- Pest specificity: For deer flies, look for products that explicitly mention deer flies or that cover a broad range of biting insects, including horse or stable flies.
<liActive ingredient profile: Plant-based or essential-oil formulations are typically gentler and suitable for around pets and children when directed, while high-DEET or synthetic options offer longer protection in harsh outdoor conditions.
<liApplication context: Clothing-and-gear sprays are ideal for outdoor work, while room sprays or aerosols suit indoor or patio use. Always follow label directions for safe use around animals and food areas.
<liDurability and coverage: Larger bottles or concentrates provide longer-lasting protection; consider whether you need ready-to-use sprays or products requiring dilution or mixing.
<liSafety and residue: Fragrance-free or non-greasy formulas reduce residue on skin and surfaces. For sensitive spaces (stables, kennels), select products with minimal odor and quick-evaporation.
<liRegulatory and pet considerations: Some products are marked safe for use around pets when used as directed; others require restricted areas during application. Always read labels for loading, ventilation, and re-entry guidance.
When selecting a solution, match the product’s active ingredients and usage scenarios to your environment. For quick, on-the-spot control, consider sprays with rapid knockdown and low residue. For ongoing protection around barns or yards, a combination approach—such as clothing repellents for personal protection plus surface sprays for premises—can provide broader coverage. Always follow label directions and safety recommendations to ensure effective and responsible use.