Get

In Your Inbox

Catster is reader-supported. When you buy via links on our site, we may earn an affiliate commission at no cost to you. Learn more.

Flea Treatments for Cats: Our Vet Explains

Share

cat having flea treatment

Fleas. All cat owners want to keep their feline flea-free. No one wants fleas in their house, and getting rid of them can be a frustrating battle if you do have them. What are your options for treating fleas in cats? Thankfully, there are a few things that you can do to keep fleas off your cat!

divider cat paws oct 2024

What Happens to a Cat When They Have Fleas?

Fleas are external skin parasites. They like to live on your pets, although they won’t say no to biting you occasionally. When fleas lay eggs, the eggs fall off your cat’s body and into the environment. That can mean your cat’s bed, your bed, the carpet—just about anywhere.

Skin Conditions

When fleas bite your cat, your cat is exposed to their saliva. Many animals are allergic to these bites and develop severe pruritus or itching. Depending on the extent of the scratching, your cat could lose hair or even develop secondary bacterial infections. We often call the condition flea allergy dermatitis.

Miliary dermatitis in a cat caused by flea bite allergy
Image Credit: MeowDr, Shutterstock

Diseases

External parasites can transmit a variety of diseases, and fleas are no exception. Your cat can become infected with tapeworms if they ingest a flea, usually when grooming. Other health diseases of concern include:

  • Anemia: Caused by the fleas feeding on your cat’s blood
  • Feline infectious anemia: Caused when a microscopic parasite from fleas attaches to your cat’s red blood cells and is destroyed
  • Cat scratch fever: Can be passed on to people as a zoonotic condition

divider cat paws oct 2024

Determining if Your Cat Has Fleas

You may be able to find fleas on your cat just by looking them over, but this is easier said than done. Most cats groom themselves regularly, so finding a flea is challenging. You can use a flea comb to find fleas, as well as “flea dirt” or flea feces.

Types of Prevention

Cats are not small dogs. That simple fact is vital for you to keep in mind. Applying your dog’s flea prevention product to your cat can be dangerous, even downright deadly. Stick to a reliable product that is formulated for cats. You should talk to your veterinarian about any product before you use it, as some products are contraindicated in cats with seizures because they lower the seizure threshold.

1. Topicals

Topical products are some of the most effective and broadest spectrum. They are applied to the back of the neck and allowed to dry. Some cats are sensitive to the application and lose hair at the application site.

Revolution Plus

Revolution Plus is one of the best products on the market. In one tube, it protects against fleas, ticks, heartworms, ear mites, roundworms, and hookworms. You get internal and external parasite protection. It lasts for a month.

Active ingredients: Sarolaner, Selamectin
Sizes: 2.8–5.5 lbs; 5.6–11 lbs; 11.1–22 lbs
cat with tick
Image Credit: anastasiya parfenyuk, Shutterstock

Revolution

Revolution has been out even longer than Revolution Plus. The advantage of this monthly product is that it is in tiny kittens as the weight range for the smallest size is 0–5 pounds. The protection profile is similar to Revolution Plus, except the tick protection is off-label.

Active ingredients: Selamectin
Sizes: 0–5 lbs; 5.1–15 lbs; 15.1–22 lbs

Advantage Multi

Advantage Multi is another broad-spectrum product. It offers protection against fleas, heartworms, ear mites, roundworms, and hookworms. It’s also a one-month administration.

Active ingredients: imidacloprid, moxidectin
Sizes: 2–5 lbs; 5.1–9 lbs; 9.1–18 lbs

Bravecto

Bravecto is one of the best options for convenience. It kills fleas and ticks for 12 weeks after application of this topical product. Note that it doesn’t offer heartworm protection.

Active ingredients: Fluralaner
Sizes: 2.2–6.2 lbs; 6.2–13.8 lbs; 13.8–27.5 lbs

Revolt

Revolt tends to be a less expensive option for flea and heartworm protection. It has virtually the same protection as Revolution Plus and lasts 30 days.

Active ingredients: Selamectin
Sizes: 0–5 lbs; 5.1–15 lbs; 15.1–22 lbs

Advantage XD

Advantage XD is an excellent product to consider for two reasons: it kills fleas for two months and has a size for large cats, so you don’t have to apply multiple sizes.

Active ingredients: spinetoram
Sizes: 1.8–9 lbs; over 9 lbs

2. Oral

Some cats do very well with oral flea prevention products. If your cat has a history of seizures, you must speak to your veterinarian to see if these options are safe for your dog.

Credelio

Credelio is a newer kid on the market. It has a yeast and vanilla flavor that most cats love, so it is highly palatable. It protects against fleas and ticks for a month.

Active ingredients: lotilaner
Sizes: 2.0–4.0 lbs, 4.1–17 lbs

Capstar

Capstar lasts only 24 hours, but it’s fast at killing fleas when you’re in a bind. You can give it repeatedly, but the best plan is to get a jumpstart on getting rid of fleas and transitioning to a longer-acting product.

Active ingredients: nitenpyram
Sizes: 2–25 lbs

3. Collars

There are a lot of flea collars on the market, but many of them are relatively ineffective.

Seresto

Seresto is not just effective as a flea and tick prevention product. It’s also pretty affordable when you see it provides your cat with eight months of protection from these external parasites.

Active ingredients: Flumethrin, imidacloprid
Sizes: One size collar for cats and kittens
White cat wearing a green collar from fleas and ticks
Image Credit: Inga Gedrovicha, Shutterstock

Considerations for Choosing a Flea Prevention Product

You’ll want to pick a product that is both safe for your cat and effective. Are you able to give a pill or apply a topical?

Talk with your veterinarian when you’re looking at your options, as they should be able to make a recommendation that’s best for your cat. Try to avoid “home remedies” for fleas, such as garlic powder or essential oils, unless your veterinarian gives you the go-ahead. Some essential oils, like peppermint oil, can drive bugs away, but many essential oils are toxic to pets.

divider cat paws oct 2024

Frequently Asked Questions (FAQ)

How do you apply flea prevention to your cat?

If you are using a topical flea prevention product, apply it to the back of your cat’s neck. Part the hairs so it goes down their skin and make a line of the liquid. Allow the product to dry before letting your pets play together.

Can you combine different flea treatment options?

You should only combine flea prevention products if your veterinarian recommends it. Do not combine two oral products or two topical products because you could create a toxic exposure.

cat owner vising the vet with pet cat
Image Credit: H_Ko, Shutterstock

Can you use out-of-date flea prevention in or on your cat?

You should not use expired flea prevention on your cat. The chemicals could break down past the expiration date, making them ineffective or potentially dangerous to your cat. Speak to your vet about options if one product does not work.

divider cat paws oct 2024

Conclusion

No one likes fleas. Finding the best flea prevention for your cat can be very challenging. Work with your veterinarian to decide if you need flea, tick, and heartworm protection.

Related Reads:


Featured Image Credit: goodluz, Shutterstock

Want content like this delivered to you?

Sign Up For Our Newsletter

News, insights, expert advice, and everything cat

* By submitting, you agree to our Terms & Conditions and Privacy & Cookies Policy.




How useful was this post?

Click on a star to rate (you can leave written feedback after clicking submit)

Help us improve Catster for pet parents!

Your feedback really matters.

What did you like about this post? Also how can we improve it?

Join the conversation

Leave a Reply

You’re very welcome to leave a comment or question. Please know that all comments must meet our community guidelines, and your email address will NOT be published. Let’s have a positive and constructive conversation.


Catster's Digital Magazine is Back!

Vet-approved health & behavior advice

Real cat stories & community features

Is Your Cat Happy? Here’s How You Can Tell

Cats have a reputation for being indifferent, even inscrutable. But despite their seemingly ambivalent appearance, cats experience many emotions, including happiness, and they...

Human Brains Age Like Cats – New Study Debunks the 7-Year Rule

If you’ve ever caught your senior cat staring blankly at a wall, wandering the halls at 3 am, calling out for no clear...

Chatting with Devin About Here! Have a Kitten, Fostering, & Why Two Are Better Than One | Chatty Cattys, Episode 29

In this episode of Catster’s Chatty Cattys podcast, Nicole & Dr. Karyn sit down with Devin, the founder and one-woman show behind “Here...

Decoding The Cat Loaf: What It Means and When to Worry

Few cat behaviors have captured the internet quite like the loaf. Paws tucked neatly beneath the body, tail wrapped in, perfectly rectangular. As...

More related

Tracey Stewart’s Do Unto Animals Book Review 2026: A Friendly Guide to How Animals Live

I rarely review non-cat books, but Do Unto Animals by former veterinary technician, animal advocate, and wife of comedian and former Daily Show...

16 Fruits & Vegetables That Cats Can Eat: Vet-Reviewed Facts & Tips

Cats are obligate carnivores by nature, so as long as their diets are well-balanced, like they would be in the wild, they don’t...

Can Cats Eat Chicken Nuggets? Vet-Verified Facts & FAQ

Picture this: You’re eating some dinner one night, and your furry friends gather around you. Those sweet eyes are hard to resist, but...

My Cat Ate a Bee! Here’s What to Do (Vet Answer)

Cats are curious creatures with lightning-fast reflexes and sharp senses. If your cat is an avid hunter, you may have noticed them trying...

Keep reading

Can Cats Eat Scorpions? Vet Approved Facts & FAQ

Cats naturally enjoy hunting, and small creatures are their favorite targets. Most insects do not pose threats to cats, but scorpions (and other poisonous arachnids), armed with a venomous stinger, are more dangerous for cats to hunt. Cats can kill...

Can Cats Eat Scorpions

Can a Cat Detect Seizures? – Anecdotal Reports and Scientific Facts in Perspective

Most people know that certain dogs qualify as service animals under the Americans with Disabilities Act (ADA). Dogs have the ability to detect seizures in humans before they happen, or respond once they begin, and these dogs are known as...

Domestic cat lying on owner's lap

Can Cats Eat Cod? Vet Approved Nutritional Facts & FAQ

If you’re a fan of fish and chips, you’re probably already familiar with cod, which is one of the two most common types of fish used to prepare this dish. What you might not know, however, is whether it’s okay...

Can Cats Eat Cod

Can Cats Eat Ranch Dressing? Vet-Approved Nutritional Facts & FAQ

Ranch dressing is popular in the United States. It was once only used as a salad dressing, but now, the tangy mixture is often a marinade for meat and seafood, dipping sauce for fried food, and a flavoring for processed...

Can Cats Eat Ranch Dressing

Can Cats Eat Fish? Vet-Verified Benefits, Dangers & FAQ

Site after site claims you can safely feed fish to your cat, and you’ll even find many commercial cat foods that use fish as a protein. But is fish actually as safe for cats as we’re led to believe? The...

Can Cats Eat Fish

Tiny Tiger Cat Food Review of 2026: Recalls, Pros & Cons

Review Summary Tiny Tiger is a cat food brand that’s sold exclusively on Chewy. However, Chewy does not state who manufactures Tiny Tiger cat foods, except that it is made in North America. They mention that some of their ingredients...

Tiny Tiger Cat Food Review

Is My Cat’s Jaw Broken? Vet-Reviewed Signs to Be Aware

Cats instinctively hide their pain, so it can be difficult to tell if something is amiss. If your cat is in pain, you will want to look out for subtle signs. These can include changes in behavior, routines, or posture....

Red cat dropping his jaw surprisingly

5 Signs of Aggression in Cats: Vet-Reviewed Behavior Problems to Watch For

Aggression is a relatively common feline behavior problem, and it can have several causes, from pets getting a bit too carried away while playing to pain and fear. Feline aggression can be quite serious, it can cause injuries and make...

Scottish fold cat very angry and aggressive

Love Cats? So Do We! Join the Catster Community

Stay informed with expert pet care insights delivered straight to your inbox! Discover professional guidance on animal behavior, feeding tips, trusted product picks, and much more.




Sign up for the Catster Email Newsletter

Stay informed with expert pet care insights delivered straight to your inbox! Discover professional guidance on animal behavior, feeding tips, trusted product picks, and much more.