Seresto Flea Collar Reviews – Flea and Tick Prevention for Dogs

Ticks and fleas can be quite annoying and dangerous to your pooch. Not only do they make your dog uncomfortable, but they can also transmit diseases from one dog to another.

Treating your dog for ticks and fleas regularly will keep him comfortable and free from diseases. That’s why your dog needs a dog flea collar.

This Seresto flea collar review discusses the pros and cons of a Seresto flea collar for dogs. There are dozens of flea collar brands and people will swear by each one.

One popular flea and tick collar is Seresto. Bayer Seresto flea and tick collars are high quality and comfortable to dogs. The best thing about the Seresto collar is that it actually works.

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Seresto Flea Collar Large Dog Over 18 Lbs

This collar is easy to use, and it saves you from the hassle of applying monthly flea or tick treatments. It only takes minutes to put the collar on your dog.

The collar is water-resistant, meaning you won’t have to worry about your dog sweating or getting wet when wearing this collar. The active ingredients are continuously released for over 8 months.

Your dog will be pest free, and you won’t have to worry. The collar will essentially stop working after 8 months of use, and you can then purchase a new one.

The Seresto collar for large dogs features a release mechanism where your dog can release itself from the collar in case it gets stuck somewhere. Your dog’s own strength is enough to help in releasing itself.

It’s recommended by vets. It’s made by Bayer in the US. It is more money than a monthly treatment upfront, but it ends up being cheaper for eight months then the stuff you buy each month separately.

Perfect flea and tick option for dogs over 18 pounds. Perfect for any dog breed, male or female.

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Seresto Flea Collar Small Dog Under 18 Lbs

This is a collar for small dogs. Which means this collar is designed for dogs that weigh less than 18 pounds. If your dog is right there at 18 pounds or above, go ahead and get the larger option above.

It’s a waterproof collar, which means your dog doesn’t need to have it removed when taking a bath or when it goes for a dip in a lake or the ocean.

When your small dog has this collar on, it ensures he’s free from ticks and fleas and all infections/risks that result from them.

This collar will not only kill fleas but also ticks and lice that may wind up on your dog. The collar emits the medicated chemicals on it that will kill these things for up to eight months.

Once the package is open, the collar will start working, so don’t open it until your ready to use it. The collar also has a breakaway mechanism that gets activated if your dog seems to be stuck on something or struggling. It will basically break the collar off in emergencies.

The collar is odorless, so if you’re snuggling up to your dog, you won’t smell an awful chemical smell on them. It is also not greasy to the touch either, which is important when picking out flea and tick products.

Don’t worry about ticks and fleas on your dog anymore. Change the collar every six months and allow your dog to feel at ease without all the constant scratching from fleas.

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Seresto Flea Collar Reviews

Why Does My Pooch Need a Flea Collar?

A flea collar prevents fleas and ticks from feasting on your dog. Flea collars have a flea repellant that even if your dog encounters fleas, they will not have a chance of biting your dog. There is a prevention flea collar and a flea treatment collar.

A repellant flea collar emits a gas that’s toxic to dog fleas while a flea treatment collar is a medication collar where the medicine is distributed all over your dog’s fur by its skin’s oils.

Once the medication has been distributed, it’s then absorbed into your dog’s fat layer underneath its skin.

All you need to make sure is that the collar perfectly fits your dog.

How Does a Seresto Flea Collar Work?

Seresto flea collars work just like any other collars, but one huge difference is that it is scent free and waterproof. The collar has been coated with an unscented insecticide that has the ability to repel and kill living fleas in 24 hours.

The collar can last up to 8 months without you buying a new one. Your dog can also enjoy a swim or a bath without the need to take off the collar.

Repelling a flea means that the flea won’t have a chance of attaching itself to your dog’s skin, and there won’t be any diseases caused.

The main ingredients in a Seresto dog collar are flumethrin and imidacloprid. These two ingredients are so strong that they kill fleas and ticks in 24 hours.

A study was done to determine the effectiveness of imidacloprid and flumethrin and concluded that the two ingredients can prevent and also kill fleas, ticks, and lice on infected dogs.

Once the collar comes into contact with your dog’s skin, the repellant spreads throughout his body, meaning no flea or tick will attach itself to your dog’s fur.

When a flea comes into contact with the repellant, their nervous systems shut down slowly, and their bodies eventually stop functioning.

Pros and Cons of Using Seresto Flea Collar for Dogs


  • The collars are waterproof meaning your dog can swim or have a bath while still in it
  • The collars come in different sizes
  • They are scent free
  • In case the collar gets stuck on your dog, it has a quick release mechanism
  • Can last up to 8 months
  • It’s strong but not too heavy or bulky for the dog
  • It’s effective and reduces infection risks.


  • It’s quite pricey
  • The effectiveness wears off after about 8 months
  • For dogs that are allergic to some pesticides, this might not be a very good idea.

Dog Wearing Flea Collar

Why Chose The Seresto Flea and Tick Collar for Dogs?

The Seresto collar is one of the best investments you’ll ever make for your dog(s) because it will keep them pest free for quite some time.

It’s the best flea collar in the market. It releases small portions of flea repellant for a long period of time.

The collar is smooth to touch, and it’s not too heavy for your dog, meaning your dog can wear it every day. So, if you want the best flea collar for your dog or dogs, this is the best option.

How to Put the Seresto Flea Collar on Your Dog

Below you will find helpful steps to get your seresto collar on your dog.

  • Start by getting the collar out of the packet it came in. Keep in mind once you open it, that starts the eight-month life of the collar.
  • Unravel the collar and take out the plastic connectors.
  • Put the collar around your dog’s neck and put the end through the buckle.
  • Adjust it to make sure it fits your dog snuggly, just not too tight.
  • You can put the excess through the loop and make sure you cut off any extra, so it doesn’t get in the way.
  • Your collar has three reflective clips that come with it so you can go ahead and attach those on different areas of the collar.
  • This collar lasts eight months, so you do not have to remove the collar for bath or playtime.
  • Make sure you are always checking the size that way, it is snug but not tight.

Seresto Flea Collar Review

FAQs about Seresto Flea Collar for Dogs

Q: Do Seresto Collars Expire?

A: The collar doesn’t expire per say it’s the pesticide that becomes less effective as time goes by. Most collars are effective for up to 8 months.

Also, if you buy the collar and do not open it, the collar (package) will still be useful until the day you decide to open it.

Q: Are Seresto Collars Safe for my Dog?

A: The repellants are not toxic to your pets. However, some dogs might be allergic to the collar, which means there might be a bit of irritation on the part where the collar touches. In some cases, the dog might start seizures, but this is a rare scenario.

Q: What is the Active Ingredient in Seresto collar for dogs?

A: Serest flea collars have two active ingredients, and these are; flumethrin and imidacloprid. They are both a powerful tick and flea repellents, but they are not harmful to your pet. These two ingredients are colorless and odorless, and they don’t irritate your dog’s eyes or nose.

Q: How Long Does Seresto Take to Start Working?

A: Seresto flea collars start working as soon as they go around your dog’s neck. This means fleas disappear within 24 hours of after putting it on. The fast reaction of these collars is the main reason why many pet owners go for Seresto flea collars.

Q: Are There Any Seresto Collar Side Effects?

A: There aren’t really any advertised side effects, but some people do notice an irritation on their dogs from the chemicals used in the collar. This usually means that your dog is having an allergic reaction. You can closely watch your dog, especially if they have sensitive skin, and see if your dog forms a reaction.

Q: Can my Dog Get Wet While Wearing the Collar?

A: Yes, you can continue your normal routine while your dog wears this collar. You can continue to give your dog’s baths with this collar on, and it will not ruin the collar’s effectiveness. If you take your dog to a lake or even the ocean during the summer, they can still continue to wear their collar as they play in the water.


The Seresto Flea Collar is a great option if your dog suffers from extreme fleas and ticks. What I really like is that these collars continue to prevent new fleas and ticks from getting on your dog. This is an eight month solution that works great.

I hope you found my Seresto Flea Collar review helpful in helping you decide if this is the right product for your dog. Do you own the Seresto Flea Collar or is this your first time purchasing it? Let us know down in the comments below.

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