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.

Does Apple Cider Vinegar Kill Fleas on Cats? Our Vet Explains

apple cider vinegar in a bottle

Many people consider apple cider vinegar a cure-all for various ailments. Certain applications are debatable, but what about for fleas? Unfortunately, apple cider vinegar does not kill fleas. There are claims that it helps repel them, but such evidence has not been found in scientific literature.

Even if a flea’s palate does prefer meals not soaked in vinegar, they can simply move to a new place on your cat in order to feed. Apple cider vinegar will not prevent your cat from getting fleas. Read on to learn more.

divider 3 paws

The 6 Reasons Why Apple Cider Vinegar Won’t Work on Fleas

There are a few reasons that apple cider vinegar won’t work on fleas.

1. Apple Cider Vinegar Does Not Last Long

One of the main problems with the argument that apple cider vinegar repels fleas is that it evaporates quite quickly, and your cat will groom and lick off any residue. Even if it did repel them, it would stop working too fast. Spraying your cat with vinegar every day seems tedious. Or would it need to be done every hour? Either way, this is not practical.

Most modern veterinary flea treatments are designed to last 24/7 for a month at a time. You either place the topical drop on their shoulders or give them a tablet to eat once every 30 days. This is way less work for you.

apple cider vinegar
Photo Credit: focal point, Shutterstock

2. Fleas Move Constantly to Avoid Noxious Substances

All a flea would have to do is jump on and off your cat to avoid an apple cider vinegar treatment. (This is assuming that they are repealed by it at all, which is unlikely.)

You could spray your entire house with vinegar at a high enough concentration to get them to jump through the doors and windows and out of your house; however, it’s not likely to be practical or effective.

Veterinary flea sprays exist to spray in your house, and they kill the fleas or their eggs. They help manage flea infestations by killing the fleas hiding in your carpet, between the floorboards, in the corners, and under the couch.


3. Fleas Live on the Skin, Not on the Fur

Spraying your cat with vinegar doesn’t remove fleas from where they live. Cat fur creates a protective barrier between the skin and the outer layer of fur.

Spraying an apple cider vinegar mist over a cat would just leave a thin layer on the outer protective layer of fur, and little—if any—would get down to the fleas on the skin. Most cat fur is water resistant; it wicks water away to keep the skin safe and dry, creating a perfectly warm, safe, snug home for fleas to hide.

Furthermore, fleas don’t eat the tips of your cat’s fur; they eat far below it at the level of the skin. Unless you are soaking your cat to the skin with vinegar, it’s not clear how it would affect fleas.

When you apply a topical flea treatment, you part the fur between their shoulders and nestle the tip of the pipette directly onto the skin. If you drop the liquid flea treatment onto the fur, it will not spread across the skin but sit on the fur until it disappears. Topical treatments must be applied to the skin—not the fur—to stick.

close up fleas on cat
Image Credit: KanphotoSS, Shutterstock

4. Flea Eggs Spread and Are Hidden

Apple cider vinegar will not kill flea eggs. Fleas lay eggs that roll off and spread into the carpet and crevices of our homes. These eggs can remain dormant for months and only hatch when conditions are ideal. Once they hatch, though, they jump right up onto your cat.

Fleas’ ability to hide for extended periods of time as eggs creates a constant source of reinfection. A female flea can lay about 30–50 eggs a day!

There are veterinary flea sprays that help treat your house. When sprayed on the carpet or into the corners of your house, they kill the flea eggs, reducing the source of fleas. Vacuuming and sweeping can help reduce the number of eggs, but it often does not get all the eggs. Live fleas can easily hop away from oncoming vacuums.


5. The Apple Cider Vinegar Concentration Is Weak

The concentration or amount of apple cider vinegar that is hypothetically needed to repel fleas is unclear. Also, keeping that hypothetical concentration high enough would be a difficult task.

Veterinary treatments stay within a concentration range that immediately begins killing fleas within the first bite. Killing fleas immediately is important because they start laying many eggs quickly—within 24 hours.

This is why even if your cat does not have fleas, it is good to give them treatments to prevent them from invading and spreading their eggs in your house, especially in warm weather or places where there are a lot of other cats or even dogs.

Apple cider vinegar discourage dogs and cats from chewing on furniture
Photo Credit: ThamKC, Shutterstock

6. Fleas Can Develop Immunity to the Vinegar

Even with modern medical treatments—insecticides—fleas develop immunity to them. All it takes is a couple of fleas to not be killed by an insecticide before a tolerant—resistant—population of fleas is established. There are populations that are more resistant to flea treatments than others. So, if you have tried one flea product that did not work, try another one or two.

If fleas can become resistant to insecticides, it would not take long for them to get used to homes scented with vinegar. There are likely already populations of fleas that have developed a taste for vinegar-scented skin.

divider 3 paws

Would an Apple Cider Vinegar Bath Work?

While some bathing products may seem like they are washing away the fleas, fleas are not only extremely good at hiding and sticking to the fur, but they can also jump on and off your cat. So, as soon as your cat is not in the bath, they walk back across the carpet and jump onto your cat. This is one of the reasons that bathing and even combing for fleas does not always work; they are too good at hiding and jumping.

The only thing that will protect your cat is a substance that cannot be avoided, which is why flea treatments invade their food source: the blood of the skin. So even if the flea jumps off, when they come back (and they always do), they ingest the insecticide and are killed.

If you need to control fleas in your cat, reach out to a vet for the best course of treatment.

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

divider 3 paws

Conclusion

Apple cider vinegar, or any type of vinegar, will not help you control fleas. While it sounds like an easy solution to an itchy problem, it is not an effective method. Instead of trying it, reach out to your vet about flea treatments for your cat.

Related Reads:


Featured Image Credit: focal point, 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. Must I buy only Pharma flea products ($$$$) or can I use a mixture of Dawn Dishsoap and h2o and spray directly on my healthy indoor cat? i HAVE NO IDEA WHERE FLEAS CAME FROM. Feel really bad because I must be the culprit!!!

    1. Hello again Janice, here are some other posts you might find useful:
      How Did My Indoor Cat Get Fleas? 7 Possible Reasons – https://www.catster.com/cat-health-care/how-did-my-indoor-cat-get-fleas/
      My Cat Has Fleas! How Do I Clean My House? Vet-Approved Advice & Best Practices – https://www.catster.com/cat-health-care/cat-has-fleas-how-to-clean-house/
      If you need further assistance please don’t hesitate to contact www.pangovet.com, they will be happy to advise you.

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

How to Tell If a Nursing Cat Is Pregnant Again? 7 Vet Reviewed Signs to Look For

Felines are extremely fertile animals, with females able to experience heats every 2–3 weeks during the breeding season1. That adds up to multiple...

Does Airbnb Allow Cats? 2025 Info Guide & FAQ

Although most cat parents don’t travel with their cats, more travelers are taking their cat companions with them when they hit the road....

Are There More Cats or Dogs in the US? Facts & FAQ

It’s an argument for the ages. Cats vs dogs. Are you a cat person or are you a dog person? While many of...

Triaditis in Cats: Causes, Signs & Treatments (Vet Answer)

Feline triaditis is a phenomenon that occurs when there are inflammatory diseases affecting three different organs in your cat’s body at once. The...

More related

220+ Halloween Cat Names: Ideas for Enchanted Kitty

Halloween is a popular holiday and a favorite one for many of us! One of its most iconic symbols is a black cat....

Why Do Cats Roll in Catnip? 5 Common Reasons

Most cats love catnip. There might be nothing more adorable than the concentrated energy cats bring to every interaction involving this powerful plant....

Can Cats Feel Love? Vet Reviewed Facts & Considerations

Very few cat owners around the planet would dare utter the possibility that their cat can’t feel love. After all, what are all...

8 Best Robot Vacuums for Cat Litter in 2025 – Reviews & Top Picks

Anyone with a litter box knows how obnoxious it can be to find cat litter all over your floor. Whether your cat kicks...

Keep reading

Why Do Cats Roll in Dirt? 6 Vet-Verified Reasons for This Behavior

Have you ever looked into your backyard only to find your cat rolling and writhing around on the ground? If so, there should be no need to worry about your cat’s health or well-being. In contrast, cats roll around on...

calico-cat-rolling-in-the-dirt_Cathleen-Wake-Gorbatenko_shutterstock

How to Care for a Blind Cat: 7 Vet-Reviewed Tips

When your cat starts to lose their vision, you might start to worry about how much harder it will get to care for them. Fortunately, going blind is not nearly as big of a deal to your cat as it...

Portrait of a blind tabby cat

Cat Hierarchies & Social Structures: Based on Science

If you live in a multi-cat household, you might have noticed that some of your cats get along better with each other than with others. Do domestic cats have a social structure, and if so, how are these organized? Are...

Feral cats eating on stone path

Why Do Cats Roll Around in the Litter Box? 4 Vet-Approved Reasons & Tips

As humans, we don’t consider rolling on the bathroom floor something we want to do. Therefore, when our cats decide to roll around in the litter box, it can strike us as pretty revolting. However, there are several reasons why...

cat lying on litter tray

Does Pine Sol Kill Fleas on Cats? Vet-Reviewed Effectiveness & Safety Explored

Pine-Sol is a well-known cleaning product for kitchen and bathroom floors. There is some information surrounding the product and how it may affect fleas on cats, but we can confidently say that Pine Sol does not kill fleas on cats....

Cat wearing collar scratching and itching

Why Do Cats Smell Other Cats’ Butts? Vet-Reviewed Behavior & Communication Facts

Cats are meticulous, extremely clean creatures that act elegant and sophisticated most of the time. That’s why it’s a bit surprising to cat owners to see their cat smelling another cat’s butt. While this might seem like weird behavior, it’s...

Gray cat sniffing another cat butt

How to Train a Cat to Stay Indoors: 7 Vet-Approved Tips

Of the over 160 million cats in the United States, roughly 30—80 million are unowned and roaming free1. Many cats with owners also live outdoors, at least part of the time. Outdoor cats pose a risk to wildlife and are...

cute cat rearing up licking finger of the woman kneeling on the floor

How to Brush a Cat That Doesn’t Want to Be Brushed: Vet-Reviewed Step-by-Step Guide

A lot of cat owners don’t think about brushing their cats (after all, cats are pretty excellent at grooming themselves), but it’s a good idea to do this. Not only does it help kitty stay tangle- and mat-free, but it...

cat brushing a home