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

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

Can a Cat Get Fleas in the Winter? Vet Approved Facts & Tips

No flea life stage can live in cold weather below 30°F for more than 5 days, which leads to the common misconception that...

cat in the snow scratching itself

How Long Does Flea Medicine Take to Dry? Vet Approved Facts & FAQ

Fleas are tiny, but they are a big problem. Getting rid of fleas can be tricky once your pet brings fleas into the...

Woman injecting cat product to prevent from flea treament

The Cats-Kill-Wildlife Conundrum: Exploring a Common Issue

While we like to think of our pets as tame animals, our cats are still deeply in touch with their wild instincts. When...

cat and bird

Why Do Cats Lay in the Sun When It’s Hot & Why They Should Stick to the Shade: Vet-Verified Facts

If your cat is like most, they probably take every chance they can get to snooze in the sun. You might be thinking...

cat on the beach

More related

Bleach Bottle Spray

Does Bleach Kill Fleas on Cats? Vet-Verified Facts & Safety Guide

Have you spotted fleas crawling all over your favorite furry friend? You might have heard that bleach can kill fleas, but hold off...

Bengal cat beside food

Do Cats Eat Less in Summer? Vet-Approved Seasonal Feeding Guide

Have you ever noticed that when winter comes, you start to eat more and crave heartier foods, while when summer rolls around, you...

vet checking up a cat

How to Increase Red Blood Cells in Cats: Anemia Treatment & Prevention (Vet Answer)

A low number of red blood cells (also called erythrocytes), or anemia, can be found in cats in various pathologies. Anemia can make...

Sad, calico cat sitting, looking through small front door window on porch

How To Make An Outdoor Cat Into An Indoor Cat

There are many reasons why your outdoor cat is now transitioning to life as an indoor cat. Your kitty could be getting older...

Keep reading

Nutro Cat Food Review of 2025: Recalls, Pros & Cons

Nutro Cat Food Review Summary Founded in the 1920s, Nutro is an American pet food manufacturing company and a subsidiary of Mars Inc., which also manufactures other pet food brands, including Whiskas, Royal Canin, and Iams, and is now headquartered...

Nutro Cat Food Review

How to Make Dry Cat Foods Soft: 6 Vet-Approved Methods That Work

Some owners prefer to feed their cats dry food, whether as a solitary source of food or in addition to wet food meals. Because kibble is dehydrated, cats on a kibble diet should be drinking water to prevent dehydration. However,...

orange cat eating wet food

Are Tomato Plants Toxic to Cats? Vet-Reviewed Houseplants Examined

There’s nothing more exciting than welcoming a new cat into your life. Having a pet involves taking good care of it and buying the proper cat food, plenty of kitty litter, and some toys. If you plan on allowing your...

Catster_Are Tomato Plants Toxic to Cats

10 Best Cat Shampoos in the UK in 2025 – Reviews & Top Picks

Cats are generally very clean animals that spend a ton of time cleaning and grooming themselves. However, whether your cat is old, has mobility issues, or has managed to roll in muck or dirt, it might be necessary to give...

cat wearing a towel after a bath

How Long Do Cats Mourn the Loss of Another Cat? Feline Grieving Explained (Vet-Verified Info)

Humans are not the only beings that experience emotions. Not only can our cats experience a broad spectrum of emotions that humans share, but they also live entirely complicated lives that we don’t understand. When it comes to a cat...

sad calico cat with third eyelid

6 Reasons Your Cat Kneads and Purrs: Vet-Approved Facts

Cats knead for various reasons, from showing affection to soothing themselves, and nothing beats being on the receiving end of sweet kitty affection! Holding your cat while they knead and purr can make all your human worries vanish into thin...

Cat paw on a red fabri

When Do Male Cats Become Sexually Active? Vet-Reviewed Signs & Recommendations

Kittens are cute, fluffy, and fun, but they grow up fast. Not only in terms of size and demonstrating more adult behavior traits, but also in mating habits. Sexual maturity and mating desires start early in the feline community. The...

male cat lying down

Cat Nail Biting: 3 Vet-Verified Tips If Your Cat Chews & Pulls Their Claws

For the most part, cats biting nails and chewing claws is a perfectly normal behavior, and if you notice your cat doing this, there is usually nothing to be overly concerned about. Cats are fastidious groomers, constantly licking and cleaning...

brown tabby cat with green eyes lying on the sofa, bites its nails