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

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

Kit & Kaboodle Cat Food Review of 2025: Recalls, Pros & Cons

Review Summary Kit & Kaboodle is one of the most inexpensive cat foods. However, the quality is relatively low, with low-quality filler ingredients...

How Much Does It Cost to Own a Lykoi Cat? 2025 Price Guide

The Lykoi cat (commonly known as the werewolf or wolf cat) is a unique and relatively new addition to the feline world. These...

8 Types of Siamese Cats: Colors, Variations, Pictures, Traits & Facts

The Siamese cat is one of the oldest breeds in existence. Dating back hundreds of years in Thailand, there is mention of cats...

Can Cats Eat Onions? Vet-Reviewed Risks & Dangers

Any cat owner knows that our felines don’t always make the best choices about what they put in their mouth. Even the pickiest...

More related

Can Cats Eat Nutritional Yeast? Vet-Reviewed Facts & FAQ

Nutritional yeast is usually healthy for cats in moderation. Unlike baking yeast—which is highly dangerous to felines—nutritional yeast is deactivated yeast, which means...

How to Put a Cat on a Diet: How, Why & 4 Vet-Approved Steps to Follow

As you may or may not know, cat obesity is a problem in the United States, so much so that up to 63%...

Caring For Feral Cats: Should You Do It? Vet-Approved Advice

If you’re a pet lover and have a feral cat colony in your neighborhood, worrying about them is natural. Do these felines have...

9 Best Medication for Cat Allergies (2025) – Reviews & Top Picks

Allergies occur when the immune system is sensitive to a particular substance. The allergens may not affect your other pets, you, or human...

Keep reading

Will My Cat Get Diarrhea After Changing Food? Vet-Approved Nutritional Transition Facts & Advice

There are many reasons you might decide to change your cat’s food. Maybe your vet recommends a special diet to address your kitty’s health, or your pet store has stopped carrying your cat’s favorite food. Unfortunately, you can’t suddenly stop...

siamese cat eating food from bowl at home

Blue Buffalo Cat Food Review in 2025: Recalls, Pros & Cons

Review Summary Many pet owners might be surprised to learn that Blue Buffalo was only founded in 2003. Despite being a relatively young company, Blue Buffalo has quickly carved out a name for itself as one of the premier manufacturers...

Blue Buffalo Cat Food Review

Can Cats Eat Guava? Vet-Approved Facts & FAQ

Guava is a popular fruit for various reasons. It’s no shocker that humans delight in and derive nutrients from this tropical fruit. But what about feline companions? Can they eat guava? And if so, do they get any nutritional reward...

Can Cats Eat Guava

9 Best Cat Grooming Tools of 2025: Reviews & Top Picks

Whether you have a short- or long-haired cat, there’s no doubt that finding your cat’s hair everywhere—and we do mean everywhere—is not your favorite part of the day. Grooming is an essential part of pet ownership. It helps us keep...

There’s a Sudden Behavior Change in My Cat, Is It a Medical Issue? Signs to Watch For

Cats are fairly consistent animals and creatures of habit. While their personalities may change when they age from kittenhood to adulthood, most cats will sustain the same personality all throughout their lives. So, sudden behavioral changes don’t usually happen without...

cat scratching owner

Why Do Cats Rub Against You? 4 Vet-Verified Reasons For This Behavior

One of the most heart-warming feelings is a kitty rubbing up against you, asking to be pet. But have you ever stopped to wonder what those gestures mean in cat language? There are two main ways a cat rubs their...

cat rubbing against owner

11 Best Cat Shampoos for Shedding – 2025 Reviews & Top Picks

Shedding can be a big pain to deal with, especially if your cat spends most or all its time indoors. Cats just love to leave a little sprinkling of their hair everywhere they go, and it can be normal. However,...

shorthair cat in pink towel shampoo bubble bathroom

Why Is My Cat Losing Hair on Their Tail? 8 Vet Verified Reasons

Aside from their adorable meows and beautiful eyes, cats’ fur makes them cute and lovable. The only species of a hairless cat is the Sphynx cat, which is less popular than other cat species. But did you know that cats...

Cat losing a fur in its tail