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, 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.

Types of Seresto Flea and Tick Collar

Seresto Flea Collar for Large Dogs
Seresto Flea Collar for Small Dogs

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 such that even if your dog encounters fleas, they will not have a chance of biting him. 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.

Dogs Get Fleas from Different Places

Your dog might be an indoor dog but there’s a chance it’ll still get fleas from its surroundings. For example, if you have small wild animals like skunks and squirrels coming into your compound, there’s a chance they might drop a few fleas.

If you have a cat, there’s a chance it’ll also drop a few fleas from its ‘errands’. Humans can also be flea carriers. That’s why a flea collar comes in handy.

Fleas and ticks can be difficult to see. In short, your dog is prone to ‘collecting’ fleas from anywhere and anyone.

How Does a Seresto Flea Collar Work?

Seresto flea collars work just like any other collar 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 on 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 reduce 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.

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 Choose the Right Size Seresto Dog Collar

Seresto flea collars come in three sizes, for big dogs (dogs over 18 pounds), for small dogs (dogs under 18 pounds) and for cats.

Dogs like pugs will have a hard time getting a collar because it might be too big or too small for the dog.

Seresto Collar Dog Large 70 cm by Seresto

Seresto collar reviews

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 wet resistant; you don’t need to replace it until 8 months are over. The active ingredients are continuously released for the next 8 months. Your dog will be pest free for the next 8 months.

The Seresto collar for large dogs also 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.

Seresto Flea Tick Bayer Collar Small Dogs UNDER 18LBS (15.5 in)

Seresto collar reviews

This is a collar for small dogs. It’s waterproof which means your dog doesn’t need to have it removed when taking a bath or when it goes for a dip.

However, exposing the collar to water regularly reduces is effectiveness from the recommended 8 months to 5 months.

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.

The pesticides found on the Seresto collar for small dogs are not harmful to your dog. You are assured of no mishaps when your dog puts it on.

How Do You Put On The Seresto Flea Collar?

The first step is to remove the collar for the protective packaging. The second step is to unroll the collar then double check for plastic connectors inside the collar.

Slide the end of the collar to the other end of the collar through the buckle. Slide the collar over your dog’s head and then adjust its tightness by placing two fingers between the collar and your dog’s neck.

Cut any excess collar with a very sharp object like a pair of scissors.

You don’t need to saturate the collar with a pesticide because the collar is already treated and it will keep releasing the pesticide for a period of 8 months.

FAQs about Seresto Flea Collar for Dogs

1. Do Seresto Collars Expire?
The collar doesn’t expire per se; it’s the pesticide that becomes less effective as time goes by. Most collars are effective 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.

2. Are Seresto collars safe for my dog?
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.

3. What is the active Ingredient in Seresto collar for dogs?
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.

4. How long does Seresto take to start working?
Seresto flea collars start working as soon as they go round 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.

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