Ultimate Guide To The Best Cat Flea Treatment

Ultimate Guide To The Best Cat Flea Treatment

For every pet owner, there is one major concern: what do I do if my pet gets fleas? This problem is, indeed, bothersome – mostly because one simple flea can lead to another 500 baby flea eggs in less than two days.

And you won’t even know where to look for them! Plus, not only will you have to eradicate the existent ones – but you’ll have to prevent new fleas from joining in. It’s a lot of trouble – but with a little patience, it can be done.

Cat With Fleas

Still, with so many good products on the market nowadays, it’s not really that easy to find the best cat flea treatment. Hopefully, you will be able to use the tips in this article – and therefore make the appropriate choice for your pet.

Best Topical Cat Flea Treatment

Here are our top picks for best topical cat flea treatment:

Winner: Bayer Advantage II Flea Prevention For Cats

The Bayer Advantage II is considered by many people to be the best topical cat flea treatment, being also recommended high and low by veterinarians for its effectiveness.



  • Fleas are killed on contact, so no biting will need to happen
  • Fleas will start dying within the first 12 hours
  • The active ingredient will not enter your pet’s bloodstream
  • It is waterproof, so it does not require reapplication after baths or rain
  • It works on ticks as well
  • Odorless, so it should not bother the cat
  • You must make the application every month, without interrupting the treatment
  • The product is fairly expensive
  • Some users reported distress on their pet immediately after they applied the treatment

This topical flea prevention treatment is odorless. Therefore, the chances are that your cat will not even notice that they are “wearing” the treatment. The less they smell of it, the lower the chances of them licking it off.

Applied once a month, this treatment will enter the skin of your cat and kill flea upon contact – while also breaking the flea cycle. This treatment also kills the more resilient eggs, tackling the problem from its very origins.

This flea treatment is also waterproof, so there will not be any issues if your cat is caught in the rain. It will keep the fleas off so that they will die without a host – making it, therefore, the best cat flea treatment.

Bayer Advantage II Cat Flea Treatment

Source: walmart.com


The Advantage II flea treatment can kill the fleas upon contact. This means that the flea will not have to bite your pet to die – which means that your cat’s misery will be cut short. 

The active ingredient is called “imidacloprid,” and it is a safe ingredient that will not enter your cat’s bloodstream. It’s non-toxic, making it perfectly safe for your pet. This is a good option for cats that are particularly sensitive to chemicals.

Furthermore, the topical agent will work fairly quickly, as the fleas will start to drop within the first 12 hours. All signs of fleas should be gone within a month or two; however, you may want to continue the treatment, to prevent reappearance.

Runner-Up: Catego Flea And Tick Control For Cats

Those looking for the best cat flea treatment might find great use in the Catego topical treatment. With a soft formula that was made especially for cats, it is perfectly safe if your pet is only 8 weeks. old It just has to be over 1.5 pounds.



  • It is budget-friendly
  • Very toxic to both fleas and ticks
  • It acts very fast compared with other flea treatments
  • The protection is long-lasting
  • Some cats may experience allergic reactions or irritation
  • It can be fatal for humans if it’s ingested
  • It’s more water resistant rather than waterproof

This product acts fairly fast; in 6 hours, you will already see effects of the treatment. Plus, not only is it able to kill the adult fleas, but it will destroy the eggs as well.

The effect of this treatment is long-lasting, only requiring you to reapply it once every 30 days. Plus, considering that the treatment is waterproof, you will not have to reapply it every time it rains. It is a good choice for outdoor cats as well.

Catego Cat Flea Treatment

Source: ebay.com


The Catego topical treatment features a patented applicator that makes it easy for you to apply it – everything while minimizing skin abrasion risk. Plus, the formula is concentrated, so you won’t need more than a drop for it to take effect.

Plus, you can find this treatment in different packs, depending on how many cats you have. You can find it in packs of 3 and in packs of 6 – but generally, you won’t need more than one dose for a cat – unless the infestation is very bad.

Many people consider this to be the best cat flea and tick treatment, and for a good reason. It’s quick, it’s effective, and it does not bother your cat much when it comes to odor and feel.

Best Oral Cat Flea Treatment

Let's take a look on our top recommendations for this category:

Winner: Novartis Capstar Flea Tablets For Dogs And Cats

You may have a cat, you may have a dog – or you may have both. In this case, an oral treatment that is meant for both pet types should be the best cat flea treatment you can find.



  • It works on both cats and dogs
  • It kills stubborn adult fleas again
  • Quick action
  • The infestation is controlled quickly
  • The effect is not long term
  • It does not kill the eggs as well
  • You have to administer them orally
  • Some breeds may be highly sensitive to moxidectin

This treatment is found in the form of tablets – which means that all you will have to do is open their mouth and make them ingest it. The fleas will start dying within 6 hours for cats and within 4 hours for dogs.

This treatment works only with adult fleas – so you may want to add a topical treatment to the mix as well if you plan to target eggs.

Novartis Capstar Cat Flea Treatment

Source: walmart.com


This treatment comes in a box with 6 tablets – just enough for a full treatment for one of your pets. You will have to only give them one pill per month, and it will be enough. 

Plus, considering that they were made to be ingested, they are not toxic. For instance, if the cat would lick a topical treatment, then there may be certain side effects. However, if administered right, this one is the best flea treatment for a cat.

You may, however, want to consult with your veterinarian before administering these to a cat. Since cats are more sensitive, they may see some side effects if they are prone to moxidectin allergy, the main active agent.

Runner-Up: PetArmor FastCaps Oral Flea Control Medication

This capsule pack is also considered to be the best oral cat flea treatment that you can give to your pet – regardless if it’s a dog or a cat. It’s quick, easy to act, and will leave your pet free of pesky adult fleas.



  • The effect is fast; it takes 30 minutes
  • It works on larvae as well
  • It keeps the fleas from jumping on  your pet in the long run
  • Cats may have a reaction to it (lethargy, panting)

The active ingredient of these capsules is called “nitenpryam,” which is common among most pills of this kind. It is also considered one of the safest, and with the smallest number of side effects.

As long as your pet weighs at least 2 pounds, these capsules are safe for them. Generally, a single dose should be able to kill all the adult fleas on your pet; however, to keep them off, in the long run, you may want to give them one dose every month.

PetArmor FastCaps Oral Flea Control Medication

Source: target.com


The capsule is relatively tasteless and odorless; however, if you can’t get your cat to swallow it, you may want to place it in their food. Make sure that it is buttery food, as there will be fewer chances for them to regurgitate or reject the pill.

The effect is fairly quick, and within half an hour, you should already start seeing results. These pills are a good choice if you need to kill adult fleas fast. It’s definitely the best cat flea treatment you can get for the money.

Best Flea Collar

This is our winner for the best flea collar:

Bayer Seresto Flea And Tick Collar

Sometimes, there’s nothing better for keeping the fleas off your cat than by giving it a flea collar. If your cat is the outdoor type, then this collar is the perfect thing to keep new fleas from hopping on.



  • Stylish design
  • It is easily adjustable
  • It is affordable
  • Long-lasting effect
  • It offers effective and immediate results
  • Some cats may have allergic reactions (hair loss)
  • times-circle
    The smell is very strong

This collar, unlike other flea treatments, is very easy to apply. This means you will not have to go to war with your cat each time you want to flea-proof it. It’s the cat flea treatment best option for some people.

Bayer Seresto Cat Flea Treatment

Source: seresto.com


This flea collar is enough to keep your cat protected for at least 7-8 months – after which you will need to replace it. This way, you will no longer have to go through the hassle of monthly topical treatments.

The fleas and ticks are killed through contact, which means the pests will not have to bite your pet to die. Your pet will no longer have to suffer, and the fleas will start dying after the first few hours of contact.

Features To Look For

What is the best cat flea treatment? The answer is: it depends on what you are looking for. The best treatment for your friend’s cat may not be the best for your cat. You may want to read a cat flea treatment review before settling on one product.

There are many good treatments on the market – but at the same time, none of them was made to be the same. Some are applied, others are ingested – and some may take longer than others to take effect.

Most of the time, these features can be found on the label – but when that is not possible, you might want to read some cat flea treatment reviews so that you can get a general opinion.

The Type Of Treatment

The best cat flea treatment comes in various forms and has various purposes. Before you go for a certain type, you will need to assess the situation. The chances are that you will need more than one type to get rid of all the pests.


Topical treatments are applied once a month, and they are usually the preferred option since they are easy to apply. Humans love them because they are effective in killing both the adults and the eggs – the latter being the peskiest to control.

Topical Flea Treatment

On the other hand, cats may not love them as much, and they will try as much as possible to lick them off – which is why you may want to apply this treatment somewhere that cannot be reached.

The best place would be to apply it on the line where the head meets the neck. Unless your cat somehow develops a lizard tongue, it will be impossible for them to reach the solution.

Oral Medication

If your willpower is strong enough to resist the kitty eyes that say “why are you doing this to me, human,” then oral medication will be a good way to get rid of and prevent fleas.

They can be sold in the form of tablets and oral drops – both of which will be hated by your cat. Still, they are effective since they act from within – therefore keeping the pests off your fluffy friend.

The problem with oral medication, however, is that it is not able to kill the eggs. Indeed, it has no problem killing off the adults and the larvae – but for the eggs, you will need some sort of topical treatment.


You’ll need a collar anyway to make sure your cat doesn’t get lost – so why not make it a flea collar. These collars have been treated with flea repellent solution that will either kill or send the fleas running.

The problem is that even the best cat flea collar will have to be replaced at some point. Normally, they are only effective for 6 months – give or take. Some lose their scent even faster than that.

Moreover, since collars are only isolated around the neck area, it is possible that fleas will just migrate to the opposite parts of the body – such as the tail. This is especially likely if the collar has passed three months of usage.


Sprays are a good option if you need something – on-the-spot – between the monthly topical applications. While this product may not help in keeping the fleas from jumping on your pet, it will still kill the fleas it comes into contact with.


These are not that popular among pet users as topical treatments, mostly because they are rather messy. Plus, they tend to dry out the fur – and in some cases, produce irritations – if used too often.

Using Powder On Cat


Shampoos are a good way to take off the “flea bulk” off your cat before using a topical or oral treatment. Therefore, if bathing your cat does not usually end up in a bloodbath, a shampoo can be a better alternative to flea sprays.

The drawback of shampoos is that, like sprays and powders, they do not keep the fleas off the pet. They will have to be used together with a preventive treatment for you to get rid of fleas permanently.

How Long Does It Take Until It Starts Working?

Some cat flea treatments work faster than others – and this will mostly depend on the type of treatment that you apply to your cat. The best cat flea treatment can work in as quickly as 10 to 30 minutes.

Sprays, powders, and shampoos will work instantly. They will kill the fleas almost instantly – and in the shampoo’s case, wash them off right away. They’re a good option for killing the adult fleas – although they may not be so good against eggs.

Oral medication, on the other hand, will take a little longer until it takes effect – more precisely, until the active agents enter the bloodstream. This may take up to a few hours.

Topical treatments also have an almost instant effect – at least with the adult fleas. It may take a little more until the eggs are also dealt with, but things should start taking a turn in just a few hours.

Keep in mind that once the fleas are off your pet, it does not necessarily mean that they are out of your house. They will just retreat to non-treated areas, waiting for the moment when your cat won’t be “flea-proof anymore.”

For this reason, you will have to continue the treatment for at least two months. If fleas don’t get a meal in at least two months, they will not be able to lay eggs – and will begin to starve as well.

Is It Poisonous?

Modern cat flea treatments were made to be safe, provided that you apply them correctly. Granted, even the best cat flea treatment will have some level of toxicity; it’s poison for insects, after all.

The main concern, however, is that the toxicity level is not more than your cat can handle. This is exactly the reason why dog flea treatments should not be used on cats; - simply because they have higher doses of active agents.

Vetenarian Examing Cat

The substances of concern are generally pyrethrin and pyrethroid. If over-applied, these substances may cause different kinds of reactions – which you generally have to document yourself about.

Your safest bet would be to read the best cat flea treatment reviews and look for the following symptoms:

  • Excessive salivation
  • Allergic reactions (hives, itching, high sensitivity)
  • Vomiting or diarrhea
  • Muscle tremors and staggering
  • Agitated state
  • Possible seizures
  • Difficulty in breathing

These reactions will generally not appear unless you apply the solution too often or if your cat is particularly allergic to an ingredient – in which case, you will have to take it to a doctor.

Salivation, drooling, and vomiting are fairly common, particularly if your pet ingests the topical product. Still, if the other reactions appear, you may want to do a medical check.

Ease Of Application

The best cat flea treatment will be fairly easy to apply – and will result in the least casualties. For instance, if your arms are bleeding every time you try to give your cat a bath, then you may want to reconsider using a shampoo.

Tablets may also be fairly difficult to apply unless you know the right way to open your cat’s mouth. Do it wrong, and the cat will just spit it out. Drops are less likely to be spat – but they still won’t like it.

The easiest to apply are topical treatments and collars. Topical treatments only have to be applied around the base of the neck, in areas where your cat can’t reach to lick. As for collars, they won’t take more than a few seconds to put them on.

Sprays and powders are also very easy to apply – but keep in mind that powders can be rather messy. They’re easily applied, but you may have to clean a good deal after that.


Buying the best cat flea treatment is definitely not going to be easy. There are so many factors to consider, such as the type of treatment, its effects, or how long it will take until the fleas are dead.

Small Cat Sleeping

Before making a choice, you may want to read the best cat flea reviews in detail and become informed. Your pet is, after all, your “child,” so you should ensure that it gets only the best products.

Hopefully, this article helped narrow down the choices for you. May your cat be forever rid of fleas!

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