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.

Do Indoor Cats Need Flea Treatment? Vet-Reviewed Facts, FAQ & Tips

Share

cat having flea treatment
There are a great number of benefits to keeping cats indoors, especially with all the dangers they could face when out and about. However, believe it or not, house cats can still get fleas, so they still need to be treated with flea preventatives on a year-round basis.

In this post, we’ll explain how indoor cats get fleas and why flea and tick preventatives are important for all cats.

divider 1 paws

How Do Indoor Cats Get Fleas?

Not going outdoors isn’t enough to keep indoor cats safe from fleas, as these can be brought into your home in a variety of ways. Let’s take a closer look at how these pests can get onto your cat even if they don’t go outside.

1. Other Pets

If you also have a dog, it’s possible for them to bring fleas into your house, which can then affect your other pets. Even if the dog is given flea preventatives, it can take some time for products to actually kill the fleas, meaning dogs can still carry live fleas and their eggs, and these can hop onto your unprotected cat or the eggs can drop off in your home. This is why treating all your cats and dogs with flea preventatives is essential.

Portrait of chihuahua and west highland terrier dogs in a pet store
Image Credit: BearPhotos, Shutterstock

2. People

People can also transmit fleas to their cats by visiting a house with a flea infestation. So, let’s say a friend or family member’s cat or dog has fleas, and they pop over to visit you. They could be bringing fleas or flea eggs on their clothes right into your home. The same goes for if you visit them. Fleas could come back with you.


3. Second-Hand Fabrics

While second-hand shopping is a great way to save money and help the environment, previously owned items, too, can be vehicles for fleas. For this reason, it’s wise to thoroughly disinfect and wash any second-hand clothes, blankets, or other items you’ve bought in case they come from a home with a flea infestation.


4. Pet Establishments

If your indoor cat or another pet has spent time in a cattery, boarding facility, or shelter, they could pick up fleas and bring them home. Visits to the vet also put non-protected cats at risk of fleas.


5. Mice and Rats

Mice and rats can also carry fleas, so if you have some unwelcome guests scuttling around, your indoor cat could easily end up infested with fleas, too. Proper cleaning routines are key to keeping mice and rats at bay, especially in the kitchen. It’s also crucial to check that your garbage cans are well-covered and that you close up any holes in your walls.

On that note, please don’t use cruel traps like snap traps or glue traps to capture mice and rats. Instead, stick to humane traps, like catch-and-release traps that don’t kill or harm the animal.


6. Moving House

Flea infestations could be present in your new home when you move, and the chances are increased if the home is carpeted. Central heating is another factor. Fleas thrive in warm areas. Even if you can’t see the fleas, there could still be eggs, larvae and pupae hidden away. In fact, adult fleas only comprise around 5% of a flea infestation, with the rest consisting of these other stages of the flea life cycle which live in the home and are invisible to the naked eye (or very hard to see in the case of eggs).

divider 1 paws

Can Cats Get Fleas in Winter?

Contrary to the common misconception that fleas aren’t a risk in colder periods, cats can most certainly get fleas in winter because fleas can live indoors. The warm indoor environment protects them from the cold, and the central heating can make matters worse. For this reason, cats should be given flea preventatives year-round, not just in the warmer months.

Signs of Fleas

Fleas and eggs can be hard to spot at first glance, so you’ll need to exercise due vigilance. A flea comb can help you get a better look at the coat and skin. Apart from witnessing the fleas scuttling on your cat’s coat, here are some signs to watch out for:

  • Scratching
  • Biting the skin
  • Restlessness
  • Overgrooming
  • Small red bites (including on you)
  • Black dirt (flea feces)

If you suspect your cat has fleas, contact your veterinary clinic. Your vet will recommend the right medication for your cat; these come in various forms including tablet form and spot-on form (applied to the back of the neck). It’s best to get your vet’s input on this because cats’ needs sometimes differ in terms of medication depending on their age, size, and health status.

If you need to speak with a vet but can't get to one, head over to PangoVet. It's an online service where you can talk to a vet online and get the advice you need for your pet — all at an affordable price!

PangoVet_Mention-in-Content for PangoVet2 save money

For homes with a flea infestation, you can purchase sprays designed to kill fleas and flea eggs to help—just make sure they’re not harmful to your cat and are used as instructed. Pest control operators can do this if you don’t feel comfortable doing it yourself.

Unfortunately, these sprays aren’t a cure-all. You’ll need to clean thoroughly and regularly with a special focus on washing all bedding in hot water and vacuuming carpets, skirting boards, and any hard-to-reach nooks and crannies. Steam cleaning can help with upholstery and carpets. It may take a while to completely eradicate these pests from your home.

Beige or cream coloured cat scratching its ear
Image Credit: Lubo Ivanko, Shutterstock

Extra Tips for Using Flea Preventatives

  • Never use flea treatments for dogs or cats (and vice versa). This could have toxic results.
  • Make sure the flea preventatives you’re using are suitable for your cat’s weight. Your vet can offer advice if you’re unsure.
  • Create a schedule for applying your cat’s flea preventatives and stick to it.

divider 1 paws

Final Thoughts

In a nutshell, whether they’re indoor dwellers or spend time outdoors, all cats need to be treated with flea preventatives suitable for their weight range on schedule to prevent the risk of an infestation. If you need to know more about fleas and treating your cat properly, please consult your veterinarian for advice.


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

2 Responses

  1. Yes Thank you,, my long haired cats dont show any sign of fleas , but they groom and itch constantly. Is there any other bug they could have? Should I use a flea product anyway?

    1. Hi Beth Leyland, thanks for your comment. Excessive grooming and itchy skin could be caused by a lot of reasons, from allergies to anxiety. If you need more guidance here you book a one-on-one call at www.pangovet.com.

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.


Talk With A Vet Online

Peace of mind,
anywhere, anytime

Affordable vet advice

Welcome to Coastal Cats & Critters

As much as we all love cats, we also know that in many parts of the country (and the world), the problem of...

Ask Dr. Paola – Help! My Cat Suddenly Has Dandruff! (March 30, 2026)

Welcome to our “Ask Dr. Paola” series, where every Monday we bring expert advice straight from Dr. Paola Cuevas (MVZ) to help our...

Your Cat Keeps Vomiting After Eating: Here’s What’s Going On

Cats vomit. It’s one of the less glamorous facts of life with a feline, and most cat owners have cleaned up more than...

Ask Dr. Paola – Help! My Cat Gets Diarrhea from Wet Food! (March 23, 2026)

Welcome to our “Ask Dr. Paola” series, where every Monday we bring expert advice straight from Dr. Paola Cuevas (MVZ) to help our...

More related

5 Pet-Friendly Hotels Near Galena, IL (2026 Update)

Galena, Illinois is a quaint city in the Midwest that’s perfect for people looking to escape to a quiet retreat. It has many...

We Talk to NFL Legend Boomer Esiason About the Kitten Bowl

Boomer Esiason played quarterback in the NFL for 14 seasons. He can be heard on the nationally syndicated Boomer & Carton Show and...

Are Polka Dot Plants Toxic to Cats? Vet-Reviewed Houseplants Examined

The polka dot plant (Hypoestes phyllostachya) is also known as the pink polka dot plant, the measles plant, baby’s tears, or freckle face....

How My Cats Help Me To Switch Off and Focus on The Now

Hi, I’m Dr. Karyn! Read my introduction to learn more about me and meet my five hilarious cats: Clutch, Cyril, Alex, Zelda, and...

Keep reading

How Long Do Outdoor Cats Live?? Average Lifespan & Info

Under natural conditions, cats are potent predators that effectively stalk and capture prey in a variety of outdoor environments. However, cats have become domesticated in the last 10,000 years, and in modern times, the number of domesticated cats exponentially outnumbers...

Polydactyl orange tabby cat walking outdoor

Do Senior Cats & Kittens Get Along? Vet-Approved Introduction Guide & Tips

Introducing a senior cat to a new kitten can be tricky. Differences in ages, energy levels, and physical conditions can create tension. But it doesn’t mean that your two cats will dislike each other forever. Introducing your cats to one...

Do Senior Cats and Kittens Get Along

Do Cats Pee Out of Spite? Behavior & Possible Causes Explained

No, cats do not pee outside of the litter box out of spite. While you may think that your cat has it out for you when they pee outside of the litter box, it’s usually for a reason, and the...

cat pee on carpet

How to Get a Picky Cat to Eat: 9 Vet-Reviewed Tips

While many cats enjoy their food a bit too much and happily gobble up everything in sight, others are choosier regarding what they eat. Cats can be put off by something about their food, like its flavor or texture, but...

Tabby cat eating food from white bowl

6 Tuna Popsicle Recipes for Cats You Can Make Today (Vet Verified)

Many of us turn to frozen treats to escape the summer heat. However, most ice cream and popsicles contain ingredients that aren’t safe for cats to eat. Fortunately, your cat can enjoy their own versions of popsicles that will also...

Tuna Popsicle Recipes for Cats You Can Make Today

Can Cats Eat Fritos? Vet-Approved Alternatives & Risks

Our cats love getting into all kinds of goodies in the home. Fritos might be an odd request for most cats, but some cats may be attracted to the salty snack. If you find that your cat is drawn to...

Can Cats Eat Fritos

Nulo Cat Food Review of 2026: Recalls, Pros & Cons

Review Summary Nulo is a California company that makes a wide range of cat and dog foods. It started with a man trying to take better care of his dog and blossomed into a full-grown pet care business, with high-quality...

Nulo Freestyle Cat Food Review

Can Cats Survive On Their Own By Hunting Wildlife? Vet-Approved Explanation

Cats are predators; even those who prefer to spend their time curled up in comfortable beds have the bodies and instincts of skilled hunters. The only real difference between feral cats and well-loved pets is their level of socialization. Cats,...

semi feral cat sitting on the ground looking up

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.