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The 8 Best Fly Repellents For Dogs

We know how much our dogs enjoy spending time outside as dog owners. We also understand how crucial it is to keep fleas and ticks away from our best companion. But did you realize that flies may be a nuisance to your dog?

Flies enjoy landing on your dog and biting them. They are especially attracted to open wounds, where they deposit their eggs and feed on blood. A fly repellent is an easy way to provide respite for your dog.

With so many options, it can be tough to tell which one is both safe and beneficial for your dog. BestForPets (bestforpets.org) wrote evaluations of our best fly repellents for dogs to help you learn more about them and discover the one that works best for you. Once you've decided on one, you can provide your dog with respite from these pesky creatures.

Always apply with caution and care to prevent contact with your dog's eyes, nose, and mouth. Allow your dog to lick or groom themselves after treatment to avoid ingesting the repellent. Consult your veterinarian if you detect any changes in your dog following a recent application.


Best Overall: Fly Repellent Spray Absorbine Ultrashield Green

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  • Citronella oil, clove oil, and geraniol are the active components.
  • Size: 32 oz.

Absorbine Ultrashield Green Fly Repellent Spray is suitable for horses, ponies, and dogs. It’s ideal for multi-pet households because it repels not just flies but also ticks, mosquitoes, and gnats. Because of its flexibility, it is the greatest overall insect repellent for dogs.

The eco-friendly mix comprises seven essential oils. The botanical perfume of these oils will linger in your dog’s coat, so be sure you can handle it. It makes the coats of dogs silky and lustrous.

Reapply this spray every 2 hours to keep your dog fly-free while spending lengthy lengths of time outside. Because this mixture is not concentrated, it is ready to use immediately out of the spray container. This is a non-hazardous alternative. While it isn’t completely natural, it is safe to use around humans and animals.


  • Environmentally friendly formula
  • Makes coats shine
  • Repels a variety of insects


  • The aroma might be overpowering.

Best Value: Flys-Off Fly Repellent Ointment for Dogs and Horses

 Farnam Flys Off Fly Repellent Ointment 7 Ounces

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  • Pyrethrins are active substances.
  • Weight: 7 oz.

The Flys-Off Fly Repellent Dog & Horse Ointment is the most affordable fly repellent for pets. This tub will last a long time because a little goes a long way. One advantage of using an ointment rather than a spray is that you can apply it gently around your dog’s nose and eyes without missing any places.

The ointment may also be used to cover open wounds, keeping flies away and allowing them to heal. It will prevent your dog from scratching or biting at the wounds in an attempt to eliminate the flies. It will also make your dog more relaxed and pleased outside.

The scent is the most problematic aspect of this ointment. It’s rather potent, but some dog owners don’t mind since the product works. It is safe to use on dogs over the age of 12 weeks.


  • Longevity container
  • Ointment enables more accurate application.
  • Prevents flies from landing on exposed sores.


  • noxious odor

Premium Choice: Insect Control Dog Spray Bio-Groom Repel-35

 Bio-Groom Repel-35 Insect/Flea/Tick Control Spray

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  • Permethrin (active component)
  • Weight: 16 oz.

The simple to use the Bio-Groom Repel-35 Insect Control Dog Spray repels flies, mosquitoes, and gnats. It provides flea and tick prevention. It can also be applied to horses.

The water-based solution is mild on delicate dogs’ skin. It’s non-irritating and contains lanolin and aloe to replenish moisture. This makes it suitable for everyday usage. It has a faint aroma and provides 35 days of bug protection.

Bio-Groom products are not harmful to animals or the environment. However, because it is water-based, it must be reapplied when the dog swims or goes outside in the rain. Some dog owners have reported that the protection wore off after 14 days rather than 35.


  • Effective against a variety of insects
  • Environmentally friendly
  • Scent is light.


  • It may be necessary to reapply the product on a regular basis.
  • It is possible that the 35-day period may not last.

Pyranha Zero-Bite All-Natural Dog Fly Spray

 Pyranha Zero-Bite All Natural Fly Spray

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  • Clove and peppermint oil are the active components.
  • Weight: 32 oz.

Pyranha Zero-Bite All-Natural Fly Spray is safe for dogs, cats, and other small animals to use. It repels a variety of flies using natural components, making it a safer alternative to harsh fly sprays that include harsh chemicals. The spray is also effective at repelling mosquitos, fleas, gnats, and lice.

The water-based product contains clove and peppermint oil to repel insects while without leaving your dog’s coat greasy or oily. It dries rapidly.

The aroma of essential oils might be overpowering at first, but it dissipates with time. When sprayed, the substance begins to froth. The froth eventually disappears as the liquid sinks into the dog’s coat.


  • All-natural
  • Aromatic essential oil fragrance
  • Non-greasy


  • Some dog owners may find the scent too overpowering.
  • sloppy application

Natural Insect Repellent Nantucket Spider

 Nantucket Spider Natural Insect Repellent for Dogs

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  • Essential oils are active substances.
  • Weight: 8 oz.

The Nantucket Spider Natural Insect Repellent repels flies, ticks, mosquitos, and other pests with a combination of essential oils. Rosemary, thyme, peppermint, cedarwood, and geranium oils help naturally to keep insects away from your pup without the need of harmful pesticides.

Every spray from the fine mist sprayer provides excellent coverage. This repellent will not seep into your dog’s coat, but it will make a great barrier to keep flies away. This spray may also be used to keep insects at bay in kennels, dog homes, and dog beds.

Some dog owners find the odour overbearing. If essential oils are not your thing, this is not the product for you.


  • Essential oil blend
  • There are no harsh chemicals.
  • High-quality coverage


  • Overpowering odor
  • If you don’t like essential oils, this isn’t for you.

How to Choose the Best Fly Repellent Buyer's Guide

What to Look for in Dog Fly Repellents

Understanding what’s in fly repellents will assist you in selecting one that will meet your dog’s demands.

Environmentally Friendly Repellents

Natural components such as lemongrass and citronella are commonly used in eco-friendly sprays. Except for dogs, they are non-toxic and suitable to use around people and animals. These sprays have a long-lasting aroma that you may or may not find pleasant.


Pesticide-containing repellents will repel and kill insects, but they are not suitable for use on dogs since they lick themselves. These items should never be used on dogs.

Spray vs. Ointment

Sprays are useful for providing a short layer of protection to your dog before they go outside. Sprays, on the other hand, do not cover specific areas and cannot be used near the eyes, nose, or on open wounds.

Ointments allow you to reach closer to your dog’s eyes and nose with more accuracy. You may position the merchandise precisely where you want it. Because ointments soak into the skin, they last longer. They work better at keeping flies away from exposed wounds.

Why do I have flies on my dog?

Flies are attracted to dogs for a variety of reasons. Flies can tell whether your dog has a filthy coat or if there is excrement trapped in their fur in a split second. Flies are attracted to open wounds, so if your dog has a scrape or injury, keep the flies away. They will consume the wound and place their eggs in it.

Some flies may bite your dog, which is not only uncomfortable but can also cause illnesses. Flies can potentially spread sickness. They will land on anything, including mounds of dog excrement. They can then fly right from the excrement to your dog, where they can carry bacteria.

What Can I Do to Keep Flies Away?

You may apply repellents throughout your yard in addition to on your dog. When spraying pesticides around your home, keep all animals and children away from the area until the substance has completely dried.

Remove anything that flies are drawn to. Keep dog feces out of your yard. Lock garbage can lids. Remove any mounds of decomposing organic waste and pick up garbage. To keep flies and mosquitos at bay, standing water should be eliminated.

Flies may visit your yard on occasion, but if there is nothing for them to eat, they will go.


Absorbine Ultrashield Green Fly Repellent Spray  is our top pick for dog fly repellents. It’s environmentally friendly and repels a variety of insects, although the fragrance can be overpowering. Flys-Off Fly Repellent Dog & Horse Ointment  is a good cheap alternative. It allows you to apply the product more precisely around the eyes, nose, and open wounds. BestForPets (bestforpets.org) hopes that our evaluations have helped you choose the best fly repellents for dogs.

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Dr. Deborah Fletcher

Deborah R. Fletcher, DVM, is a skilled veterinarian with more than 15 years of experience dealing with companion and exotic animals. She has experience caring for a variety of animals, including household cats and dogs, reptiles, birds of prey, and even primates. Dr. Fletcher is a valuable part of the BestForPets team, where she contributes to their aim of providing pets and their owners with the finest possible treatment and services.

Veterinarian (DVM) Dr. Deborah Fletcher


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