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Best flea treatments for cats: banish critters for good with the right formula

ginger cat scratching because he needs the best flea treatments for cats
(Image credit: Getty)

It’s always a worry when our adorable cats have fleas. And the best flea treatments for cats will quickly relieve their discomfort, and be a safe and healthy deterrent against parasites in the long-term. 

But with a variety of treatments available, it can be tricky finding the suitable one for your kitty. You have to consider things like, what levels of protection they will offer, how easy is it to apply, and how long will it last for. After all, you don’t want any critters making a sneaky comeback!

The good thing is, flea treatments for cats can easily be bought over the counter, just like the best flea treatment for dogs. And each treatment will serve a different purpose, so it’s worthwhile looking into this before you buy. In addition, some treatments would need to be used alongside others to be completely effective. 

If you want a high level of protection, the best topical flea treatments for cats  will last for around 30 days. You can either buy fast-acting tablets or a spray to apply to the back of your cat’s neck (but not on fur). These treatments will work immediately to kill current infestations, and relieve the itching.

On the other hand, if you have a fussy feline, some gentle shampoos or sprays may be tricky to apply. The best flea collars for cats may be the ideal solution, as it’s simply worn around the neck.  Best of all, flea collars repel or kill fleas for up to eight months which is perfect for owners who are after a longer-lasting treatment. The only downside is if your kitty already has fleas, they won’t treat current infestations. In any case, it’s always best to use collars in conjunction with a topical or fast-acting tablet to effectively banish parasites.

To help you decide on your course of action, read our pick of the best flea treatments for cats to keep them critter-free and content! 

PetsRadar's pick of the best flea treatments for cats

  • Best overall flea treatments for cats: Frontline Plus
  • Best budget flea treatment: Safari Flea Comb
  • Best flea collar: Seresto Flea and Tick Prevention
  • Best flea shampoo: Vet’s Best Waterless Cat Bath
  • Best fast-acting flea treatment: Capstar Flea Tablets
  • Best for indoor cats: Advantage 40 Spot On
  • Best spray treatment: Vet's Best Flea and Tick Gentle-Mist Spray for Cats

Frontline flea treatment for cats

(Image credit: Amazon)

Frontline Plus

Best overall flea treatments for cats

Available online: Yes | Amazon rating: 4.5 | Treatment type: Topical

Kills fleas, ticks and lice
Easy application
Kills 98-100% of fleas within 24 hours
The triple-action formula makes for a long list of insecticides

If you’re wanting the best all-round protection for your cat, then industry leader Frontline is pretty hard to beat.

What makes it stand out from other flea treatments on the market is its unique triple-action formula that not only targets fleas but also ticks and lice, a must if your cat is a lover of the great outdoors.

Frontline Plus is an easy-to-apply, waterproof formula that offers long-lasting protection. The two key active ingredients, Fipronil and (S)-Methoprene, work together to attack and kill adult fleas and their eggs and larvae.

We love that this treatment comes in ready-prepared individual applicators, meaning there’s no messy blending or measuring required. All you need to do is pop two dots a few centimeters apart on your kitty's neck, and they’re good to go for the next 30 days, plus the six-dose pack means that if you purchase two packs, you don’t need to worry about fleas for an entire year.

And while this super-strong formula is tough on fleas, ticks and lice, it’s not absorbed into your cat’s bloodstream, which offers great peace of mind to you as a pet parent and makes it safe to use on kittens aged eight weeks and over.

This isn’t the fastest-acting formula on the market, so if your cat has a major infestation you’ll initially want to treat it with something that provides more immediate relief. Also, it uses more insecticides than other single-action products due to it providing broad-spectrum coverage so these are things to consider before purchasing.

That being said, given that Frontline Plus used to only be available for use by veterinarians, this is a product that has far more pros than cons, making it a must-have addition to your flea-treatment arsenal.

Safari Flea Comb flea treatment for cats

(Image credit: Amazon)

Safari Flea Comb

Best budget flea treatment

Available online: Yes | Amazon star rating: 4.8 | Chewy rating: 97% | Veterinarian recommended: Yes

Tightly packed teeth
Suitable for all coat types
Contoured handle to match your grip
Not suitable for tangle removal

So spending your Sunday afternoon combing your cat’s coat to remove fleas might not exactly be what you have in mind when you think about living your best life, but if you’re looking for an affordable option, it’s the clear winner.

While adding a high-quality cat flea comb to your flea-treatment arsenal might not feel like a workable solution at first glance, it’s a great way to prevent flea infestations before they have a chance to take hold.

We love this superstar of a comb from Safari for its durability and ease of grip, and the sturdy stainless steel teeth work beautifully on both short and long-haired cats. It’s great for cats of all ages, which is perfect if you have a kitten who’s still too young for topical treatments, and the tightly packed teeth help you to trap and spot fleas and their eggs with ease.

Available in two variations, we recommend the single row of teeth for short-haired cats and the double row for cats with long hair where a little extra help getting through the coat is required. 

Unlike chemical flea treatments, using a flea comb does require a daily commitment so you might want to consider using the comb in conjunction with other methods. If your cat is prone to tangles you’ll also want to remove these with an appropriate brush first before using the comb so that your fur baby isn’t in any discomfort. 

If you’re happy spending time each day helping your cat groom their way to gorgeousness while getting rid of those unwelcome hitchhikers, then this is a cost-effect way to prevent fleas that will have your cat rolling over and purring with contentment.

Seresto flea treatment for cats

(Image credit: Amazon)

Seresto Flea and Tick Cat Collar

Best flea collar

Available online: Yes | Amazon rating: 4.2 | Chewy rating: 90% | Sustained release: Yes | Veterinarian recommended: Yes

Eight months' protection against fleas, flea larvae and ticks
Non-greasy and odourless

If you’re looking for the cat equivalent of diamonds then your search is over thanks to this standout offering from the crew at Seresto.

No more worrying about having to chase your cat around the house and tackle them to the ground just to try and get a tablet down their throat because this sustained release formula will keep your cat flea-free for up to eight months. 

It’s super easy to attach, lightweight, adjustable, non-greasy and odorless and comes equipped with two safety features for peace of mind: a ratchet-release mechanism and a predetermined breaking point that means the collar will give way in an emergency.

The Seresto flea collar contains two active ingredients, Flumethrin and Imidacloprid, which are slowly released in low doses onto your cat's coat and into the fatty layer of their skin, killing fleas and ticks before they even have a chance to bite. 

We love that, unlike topical flea treatments, the ingredients being stored in the collar and released into the skin means there’s no need to worry about your cat trying to lick it off or having it wash off if your cat suddenly decides to ignore its instincts and dive into your garden’s birdbath in hot pursuit of feathered prey. 

While it’s one of the more expensive flea collars on the market, we’ve also found it to be one of the most effective and, considering it only needs changing every eight months, the initial investment is cost-effective in the long run. 

Vet's Best flea treatment for cats

(Image credit: Amazon)

Vet’s Best Waterless Cat Bath

Best flea shampoo

Available online: Yes | Amazon rating: 4.2 | Chewy rating: 96% | Natural formula: Yes

Natural-ingredient formula
Leave-in, no-rinse foam
Safe and effective
Not suitable for long-term protection

One whiff of this shampoo and your feline fur baby will think they’ve died and gone to cat-spa heaven. With aloe vera to keep your cat’s coat healthy, oatmeal and chamomile to soothe and calm dry, itchy skin, and Vitamin E to help combat free-radical damage from environmental pollutants, flea treatments don’t get more luxurious than this.

The innovative waterless, leave-in formula means your cat can breathe a sigh of relief knowing this hair treatment won’t have them going anywhere near a bath. Apply the foam to your cat’s coat, comb through and then let the product take care of the rest. 

This fast-drying shampoo kills fleas and ticks on contact, as well as their eggs and larvae and we love that it's all done naturally without the long list of harsh ingredients many flea treatments contain, making it a great choice for cats with sensitive skin and pet parents who don’t want toxic chemicals on their pet.

While we love this natural formula, there are some drawbacks. This isn’t a long-lasting treatment, so if you’re after year-round flea protection for your cat, you’ll have to apply this every few weeks. Some cats may not like the addition of essential oils such as peppermint and cloves, so we’d recommend monitoring your cat after the first application to see how they react.

If you’re looking for a flea treatment that’s quick, easy to use, effective, with natural ingredients and no need to bathe or use water, then this shampoo is worth a go.

Capstar flea treatment for cats

(Image credit: Amazon)

Capstar Flea Tablets

Best fast-acting flea treatment

Available online: Yes | Amazon rating: 4.3 | Chewy rating: 89%

Proven to start killing fleas within 30 mins
Effective relief in one dose
Safe for pregnant and nursing cats and kittens over 2lb in weight
No long-term protection so best used in conjunction with other flea-control products

If your precious fur baby is scratching like crazy and looking more than a little forlorn, relief is just 30 minutes away thanks to this fast-acting formula from Capstar. 

We love that this product gets to work immediately and kills up to 90% of adult fleas in just six hours. It’s safe to administer one dose every 24 hours, which is fantastic if your cat has a major infestation and its suitability for all cats over the age of four weeks from 2lbs to 24lbs in weight, makes it a great product to have on standby for treating all the feline members of your family.

This oral formula is a great alternative to topical treatments and collars, which can cause skin reactions in some cats, and if trying to pry your fur baby’s mouth open requires a herculean amount of strength on your part, then don’t worry; this is a great product to crush up and add to your cat’s food, making life a whole lot easier for both of you.

One of the huge pluses with this formula is that it works its way out of your cat’s system much faster than topical treatments, meaning your much-loved companion is exposed to pesticides for a much shorter window of time. Capstar also chooses to use Nitenpyram as its active ingredient, an insecticide that has been proven to be lower in toxicity for animals than other commonly used insecticides.

While this product isn’t a replacement for a long-acting treatment, it’s great if you’re after something short-term to provide your cat with immediate relief. As Capstar only kills adult fleas and not their eggs or larvae, once you’ve given the first dose, try pairing Capstar with a product such as Frontline or Advantage, so you’re not only getting rid of the current outbreak but also preventing future ones.

Advantage flea treatment for cats

(Image credit: Amazon)

Advantage 40 Spot On

Best for indoor cats

Available online: Yes | Amazon rating: 4.4 | Chewy rating: 92% | Treatment type: Topical

Kills fleas in all life stages
Provides 30 days of protection
Not recommended for pregnant or nursing cats

If your pint-sized pal is more introverted housecat than cat about town, Advantage is a great option. Unlike Frontline, which provides added protection against lice and ticks, and Capstar, which is fast-acting but not long-lasting, Advantage offers a more targeted approach by focusing solely on fleas, killing them within 12 hours and keeping them gone for up to 30 days. It’s a great option for cats who prefer the creature comforts of home to the great outdoors.

This easy to apply formula starts working immediately and the fact it’s completely waterproof means you don’t have to worry about it becoming less effective if your cat gets wet. We love that Advantage kills fleas on contact before they have a chance to bite, which is great if your feline fur baby has sensitive skin that tends to react to bites with rashes, blisters or swelling. The fragrance-free formula is also a real bonus for cats who have an aversion to strong scents. 

As well as killing 98 to 100% of fleas in 12 hours, it also kills 99% of flea larvae within the first 20 minutes of application, and any new fleas that land on your cat in the 30 days between applications will be killed within two hours. 

This product is available in a variety of doses, so make sure you weigh your cat first to ensure you’re purchasing the correct one. If your cat enjoys time indoors and out then Advantage, which doesn’t offer the same broad-spectrum protection as other brands on the market, may not be the best choice. But, if your furry four-pawed feline rarely leaves your side, Advantage is an affordable option from a reputable brand.

Vet's Best Flea and Tick Gentle-Mist Spray for Cats product shot

(Image credit: Amazon)

If you’re after a gentle, non-toxic spray that is safe for the home, the Vet's Best Cat Flea & Tick Gentle-Mist Spray is ideal. Specially formulated with natural plant-based ingredients, this spray contains peppermint oil and eugenol from clove plants to kill flea eggs and ticks on contact. 

It’s easy to use with just one continuous press to spray directly onto any infested feline. You can control the spray option from steam to mist, and it can even be used upside down which is handy for those hidden places. Once sprayed, simply massage it into your cat’s coat so that it penetrates the skin and will work more effectively. Moreso, it’s water-based and non-staining so you can use it on surfaces that your cat sits on, without making a mess.

This is particularly safe to use on cats 12 weeks or older, and you can use indoors around the home and family. It might be worthwhile to do a test spray one hour before giving your kitty the full treatment, just in case of any sensitivities. Of course, if your cat does have an adverse reaction to the spray (even to natural ingredients!), seek medical advice immediately. 

The fact that it is non-toxic and doesn’t contain any harmful chemicals or perfume is a bonus. Although, if you’re not a huge fan of lavender, you may not appreciate the strong aroma. In any case, at least you should have a fresh-smelling (and calm) cat! 

Overall, the Vet's Best Flea and Tick Gentle-Mist Spray for Cats is an effective, non-toxic, flea treatment that’s easy to use and will tackle the problem quickly. It’s also great value for money, so won’t break the bank. 

Vet's Best Flea and Tick Gentle-Mist Spray for Cats

Best flea spray treatment

Available online: Yes | Amazon rating: 4.1 | Chewy rating: 93%

100% certified plant-based formula
Safe to use indoors and outdoors
Easy direct spray application
Good price
Sensitivity may occur after use

How to choose the best flea treatment for cats

When it comes to flea control there’s no better medicine than prevention, but with not all flea treatment products being of equal quality you’ll want to make sure you’re choosing the safest option available.

There are several factors to consider to help you make the best choice for your cat, including lifestyle, age and breed. Outdoor cats are more likely to pick up fleas, ticks and lice than indoor cats, so a product that addresses all of these possibilities is worth the investment.

Some products have restrictions on them so when selecting a product, ensure it’s age-appropriate for your fur baby and also check the weight range to make sure you’re administering the right dosage.

The length of your cat’s coat can also influence the type of treatment you use and which products will be most beneficial. If you have multiple cats, then products that offer affordability may well be the way to go.

Another factor to consider is the type of treatment you’d most prefer to use. There are a range of options from topical preventives, flea collars and oral treatments to flea shampoos, sprays and combs. We recommend combining a fast-acting, but short-term treatment, with a longer-lasting one and products such as combs with flea collars or topical preventives to ensure your cat is adequately protected.

Finally, the best flea treatments for cats are formulated differently to dog flea treatments and these are not interchangeable so always choose a product labeled specifically for cats and if unsure about what to purchase, speak to your veterinarian who can advise you on the best flea treatment for your kitty. 

Kathryn Rosenberg

Kathryn is a freelance writer with a passion for creating health and wellness, travel and wildlife content. Originally from New Zealand, her nomadic lifestyle has her currently fur baby-less. She scratches her pet parent itch by stealing frequent cuddles with any neighbourhood cat kind enough to indulge her.