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Best flea collar for dogs: Protect your pooch from unwanted critters

Small mixed-breed dog wearing the best flea collar for dogs
(Image credit: Getty)

Protect your canine companion for up to a year with the best flea collar for dogs, available in both chemical and natural options to suit every hound and home.

 While they may look small, pesky parasites like fleas and ticks can cause a whole host of health problems, ranging from skin infections to anemia. Choosing one of the best flea treatments for dogs can help ensure your pooch stays protected. 

Just like flea collars for cats, flea collars for dogs offer different kinds of protection so it’s worth doing some research before you purchase one. You’ll notice that some collars act as both a preventative and a treatment, working to repel fleas and ticks while also killing current infestations. Other flea collars for dogs are chemical-free, opting for purely natural ingredients that work to deter fleas from landing on your furkid and biting them. 

While many pet parents opt for topical flea treatments, flea collars have some distinct advantages. For dogs who don’t like the feel of a cold blob being applied to the back of their neck, a flea collar is a great alternative. They’re easy to fasten into place and unlike topicals which need to be applied monthly, many of the best flea collars for dogs provide up to eight months of protection. 

If your dog already has an infestation of fleas, you might want to consider using a flea collar in conjunction with a dose of the best flea medication for dogs to start off with. A fast-acting tablet will kill the fleas already on your dog, while the collar will ensure they remain protected. Let’s take a closer look at some of the best flea collars for dogs lining the shelves right now so that you can find the right fit for your furkid. 

Best flea collar for dogs: PetsRadar's top choices

  • Best overall flea collar: Seresto Flea and Tick Collar for Dogs
  • Best natural flea collar: Vet's Best Flea and Tick Repellent Collar
  • Best fast-acting flea collar: Rolf Club 3D Flea Collar for Dogs
  • Best hypoallergenic flea collar: SOBAKEN Flea and Tick Prevention for Dogs
  • Best affordable flea collar: Hartz UltraGuard Plus Flea and Tick Collar
  • Best flea collar tag: Only Natural Pet EasyDefense Flea, Tick & Mosquito Collar
  • Best flea collar tag for small dogs: Seresto 8 Month Flea & Tick Prevention Collar for Small Dogs

Best flea collar for dogs: A pack shot of the Seresto Flea and Tick Collar for Dogs

(Image credit: Seresto)

Seresto Flea and Tick Collar for Dogs

Best overall flea collar for dogs

Duration of protection: 8 months | Waterproof: Yes | Pests targeted: Fleas, ticks, mosquitos, lice, larvae | Treatment or prevention: Both

Long-lasting
Odorless and non-greasy formula
Kills fleas within 24 hours
Suitable for puppies as young as 7 weeks old
Vet-recommended
Side effects may include nausea
Vomiting, and lack of appetite
Dogs’ skin may become irritated

The Seresto Flea and Tick Collar for Dogs isn’t just a top choice among the best flea collars for dogs on the market in our book, it’s also the best you can buy according to vets and users alike. This popular collar is an all-in-one package for under $50: it’s waterproof, fast-acting (within 24 hours), kills and repels the peskiest pests, and lasts up to 8 months. 

Dog owners will be delighted to know that the formula is non-greasy and odorless, so Seresto’s formula works discreetly in the background without you having to apply messy monthly treatments. The main active ingredients, imidacloprid and flumethrin, are stored within the collar and released in low concentrations over your dog's hair and skin surface during the life of the collar, so your dog can have steady, reliable protection against fleas, ticks, lice, and more. 

The collar itself is adjustable, and any excess can be cut off for a more comfortable fit. Finally, the collar comes with handy reflector clips that can be attached to the collar to help keep your dog visible at night.  

While many users sing the praises of the Seresto Flea and Tick Collar for Dogs, lauding its value and effectiveness, a word of caution: because the formula uses chemicals, dogs may experience side effects such as nausea, loss of appetite, and vomiting. Dogs’ skin can also become irritated in response to the collar and experience itching. 

Pet parents are urged to watch their dog’s reaction to the collar closely to check for any abnormal or concerning symptoms. That being said, these reactions generally aren’t life-threatening and don’t occur in the majority of use cases. 

Vet's Best Flea and Tick Repellent Collar

(Image credit: Chewy)

Vet's Best Flea & Tick Repellent Collar

Best natural flea collar for dogs

Duration of protection: 4 months | Waterproof: Yes | Pests targeted: Fleas and ticks | Treatment or prevention: Prevention only

Natural formula
Steam-distilled natural oils
Waterproof
Not as long-lasting

Help keep your canine companion safe from fleas and ticks with this natural and chemical-free collar. Infused with a carefully formulated blend of steam-distilled essential oils, this cedarwood and peppermint oil collar works to repel fleas and ticks for up to four months.

Gentle and waterproof, this collar will help prevent the unpleasant itching and side effects that come from flea infestations. Made with only plant-based ingredients, it’s free from harsh chemicals, including Phthalates and PVC. 

The collar is adjustable up to 20 inches and is suitable for use during an active infestation or as a preventative measure. With a refreshing scent and safe formula, this is an effective collar that’s great for any pet parent looking for a natural approach to fleas and ticks. 

Best flea collar for dogs: Rolf Club 3D Flea Collar for Dogs box

(Image credit: Rolf Club)

Rolf Club 3D Flea Collar for Dogs

Best fast-acting flea collar for dogs

Duration of protection: 6 months | Waterproof: Yes | Pests targeted: Fleas, ticks, mosquitos, larvae | Treatment or prevention: Both

Relatively low cost
Effective within 24-48 hours
Available in 3 sizes
Does not include protection against lice
Reports of ineffectiveness
Not as long-lasting

A close contender for one of the best flea collars for dogs on the market is the Rolf Club 3D FLEA Collar for Dogs. While it’s not as long-lasting as our top choice and isn’t as highly recommended by vets and users alike, it’s still a solid option if you don’t want to spend a ton of money to test-drive the effectiveness of the collar – it’s not as expensive as the Seresto flea collar, and is, in short, a great middle-of-the-road option. Where it shines is in how fast it acts for the price you pay: it starts killing fleas and ticks within the first 24 to 48 hours of wear. Plus, the collar comes in three sizes, so no matter the size of your dog, the collar you buy can comfortably fit your pet. 

If lice and pests other than fleas and ticks are a concern, you’ll want to look elsewhere as this collar doesn’t treat and prevent as many species of insects as other collars on this list. Users also report that this product is somewhat hit-or-miss. In some cases, it works marvelously, but in others, pets saw a recurrence in flea and tick bites within a few days. 

That being said, most users are quite content with the effectiveness of the collar, though we suggest that pet owners regularly check their dogs for pests just to make sure. All-in-all, it’s a worthy buy for the price, and certainly worth trying out, especially if you’re new to buying flea collars for dogs. 

Best flea collar for dogs: SOBAKEN Flea and Tick Prevention for Dogs pack shotPets Radar Approved Award

(Image credit: Amazon)

SOBAKEN Flea and Tick Prevention for Dogs

Best hypoallergenic flea collar for dogs and puppies

Duration of protection: Up to 8 months | Waterproof: Yes | Pests targeted: Fleas and ticks | Treatment or prevention: Prevention

Lasts for 8 months
Hypoallergenic
Uses natural ingredients
Supports animal charities 
Essential oils can be strong smelling
Buckle not as strong as it could be

Dogs can come into contact with ticks and fleas from an early age, and this collar will give them full protection from both from the age of three months. Once it's put on, the collar will guard against those pesky parasites 24/7 for a full eight months. Even better, it's fully waterproof, so a dip in the bath won't make it any less effective.

It is hypoallergenic so your puppy isn't exposed to any potentially irritating ingredients reducing the chances of an allergic reaction. The collar relies on natural essential oils such as spearmint, clove and citronelle to ward off pests. Be warned though, essential oils can be strong smelling, and straight out of the packet some dogs may find the citrus smell too much. The odor does fade over time though, so it may be worth waiting a couple of days before putting it on your pooch.

The collar is 25 inches so it can be used to protect larger dogs too, and you can adjust it as your puppy grows to ensure a perfect fit. It's easy to adjust too – just wrap it around your pup's neck, slide the end into the buckle then cut off the excess (remember to leave room for them to grow if you are putting in on a young dog). As with all collars it should be adjusted to be loose on their neck so it doesn't cause any restriction. 

As an added bonus, for every collar bought $3 is donated to an organization engaged in saving animals, so you can feel good about your purchase too.

Best flea collar for dogs: Hartz UltraGuard Plus Flea and Tick Collar box

(Image credit: Hartz)

Hartz UltraGuard Plus Flea and Tick Collar

Best affordable flea collar for dogs

Duration of protection: 7 months | Waterproof: Yes | Pests targeted: Fleas, ticks, larvae | Treatment or prevention: Both

Very low cost
Long-lasting
Not as much protection against common pests
More effective as a preventative
Contains tetrachlorvinphos
Scented

As far as the best flea collars for dogs go, it doesn’t get much cheaper than the Hartz UltraGuard Plus Flea and Tick Collar. Not only is it great for pet owners on a tight budget, it also is a wonderful option for those who are looking for alternative flea and tick prevention measures without spending too much cash. While it’s long-lasting and allegedly both treats and prevents fleas and ticks, the price is somewhat reflective of the lower quality of the product compared to other best flea collars on the market. 

The formula used in this flea collar only targets fleas ticks and larvae – while this is the standard, you can get increased protection against other species of insects if you opt for a different flea collar. Additionally, users report that this collar is best used as a preventative measure, and that it is much less effective as a treatment for a pet’s current conditions. That means that it’s best used in conjunction with another product, like a flea shampoo. This collar is also scented, so if you are averse to odors (even if your dog doesn’t mind), this may not be the best product to use. 

While this collar is a great option in a pinch, it’s difficult to recommend long-term use of this collar, as the formula’s main active ingredient is a harmful and potentially toxic chemical called tetrachlorvinphos. Overexposure to tetrachlorvinphos is known to cause side effects like nausea and confusion, which can ultimately lead to conditions like cancer, or even death. For this reason, this collar is best not used around other pets and children. 

Best flea collar for dogs: Pack shot of the Only Natural Pet EasyDefense Flea, Tick & Mosquito Dog & Cat Collar

(Image credit: Only Natural)

Only Natural Pet EasyDefense Flea, Tick & Mosquito Dog & Cat Collar

Best flea collar tag for dogs

Duration of protection: 12 months | Waterproof: Yes, but avoid using in water for the first 4 weeks | Pests targeted: Fleas, ticks, mosquitos | Treatment or prevention: Prevention only

Easy to use 
Chemical-free 
Safe around kids and other pets
Long-lasting
Very expensive
Prevention only
Effective only after a few weeks
Unsuitable for pets restrained by an invisible fence or a shock collar

Folks looking for another chemical-free alternative to flea collars will find this option interesting and worth exploring. Not only is it a tag that you can easily attach to your dog’s existing collar (no adjustments needed), it’s safe to use around other pets and kids. It’s non-toxic simply because the tag doesn’t use an actual formula: It relies on holistic technology to prevent pests from harming your pet. The tag harnesses your pet’s natural energy to create a natural barrier against these pests. 

If it seems too good to be true, you’ll find that some users would agree with you – and with the somewhat hefty price tag (this tag is the most expensive option on this list), you’ll want to carefully consider whether or not it’s worth trying out. If you do decide to test out this holistic preventative treatment, be aware that it only becomes effective after a few weeks, and that it’s strongly recommended that you take the tag off your dog while it’s in the water during the first 4 weeks of use. 

If your pet has an existing pest problem, you’ll also want to treat that before using the tag, as it is a preventative measure only, to be used in conjunction with other methods like flea shampoos. Finally, a word of caution: If you use an invisible fence or a shock collar to restrain your dog at home, it’s best not to use this flea collar tag, as this can lead to compromised immune health.

Best flea collar for dogs: Seresto 8 Month Flea & Tick Prevention Collar for Small Dogs box

(Image credit: Seresto)

Seresto 8 Month Flea & Tick Prevention Collar for Small Dogs

Best flea collar tag for small dogs

Duration of protection: 8 months | Waterproof: Yes | Pests targeted: Fleas, ticks, mosquitos, lice, larvae | Treatment or prevention: Both

Long-lasting; odorless and non-greasy formula
Kills fleas within 24 hours; suitable for puppies as young as 7 weeks old
Vet-recommended
Side effects may include nausea, vomiting, and lack of appetite
Dogs’ skin may become irritated

Pet owners with small dogs generally find it quite difficult to find a good flea collar that will fit their dogs comfortably while remaining effective. Thankfully, Seresto’s collar, our best overall pick, has an option for small dogs up to 18lbs. In addition to the reflector clips included in the packaging, Seresto’s small dog flea collar also includes a predetermined breaking point. 

The formula for this collar is the same as the regular-sized version, meaning that it’s odorless, non-greasy, and is slowly released over 8 months of continued use. At about 15 inches, the collar is mighty for such a small package. The two main ingredients, imidacloprid and flumethrin, work wonders against flea and ticks, but can cause some skin irritation and other symptoms like nausea – if you observe any adverse reaction to the collar in your pet, it’s best to consult a vet regarding possible solutions or alternatives to flea collars. 

These same ingredients also render the formula waterproof, so your pooch is free to play in the water while wearing the collar, and you won’t have to worry about remembering to take it off before bath time. However, be advised that if your pet swims once a month or more, the control duration is reduced to five months for fleas and seven months for ticks. Just remember that the formula isn’t safe around kids, so if you have young children at home, it’s best to opt for a collar that uses a non-toxic formula or another flea and tick prevention or treatment method.

How to choose the best flea collar for dogs

If you’re in the market for one of the best flea collars for dogs, you may be wondering how to pick one that’s right for you and your pet. To make the best choice, there are a few factors to consider before purchasing. While all our top choices are truly the best on the market, you can narrow down your pick by looking at the following:

Chemical vs all-natural: If you are particularly concerned about chemicals around your pet or your children, opting for a 100% natural flea collar for dogs may be in your best interest. 

Odor vs odorless: While many people think a fresh smell is rather pleasant, if you are averse to strong odors, opt for an odorless flea collar. 

Price: If you’re new to flea collars for dogs and aren’t sure whether or not it’s the best treatment and prevention option for your pet, you may want to choose a less costly flea collar before investing in a high-cost one. 

These are just some of the factors that can help you make the best choice among the best flea collars for dogs. However, when in doubt, we encourage pet owners to talk to their vets for more personalized advice. 

If you’d like to see how collars measure up against flea medication, take a look at Flea Medicine vs Collars for a full summary.