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 Hot Water Kill Fleas on Cats? Vet-Approved Facts & FAQ

woman bathing her cat

Having a cat in your life is wonderful, but it sometimes comes with a catch: dealing with fleas. Apart from being annoying, flea infestations can trigger allergies, irritation, and even illness. So, getting rid of them as quickly as possible is in everyone’s best interest.

Several home remedies are available, and sometimes it isn’t easy to distinguish fact from fiction. So, how well does hot water kill fleas on a cat? Hot water doesn’t kill fleas, so don’t use this to treat fleas on your cat.

divider 3 paws

How to Tell That Your Cat Has Fleas

If you’ve never dealt with fleas, you might wonder what signs to look for. Your cat might be restless and itchy. When you part their fur, their skin might look red and irritated, and you may even see small black specks. The best place to search for fleas or flea dirt (flea poop) is on their back or necks since they congregate in hard-to-reach areas.

Fleas aren’t picky, so if you have other pets, check them for signs of infestation. If you suspect your pet has fleas, your first point of call should be your veterinarian. You can discuss the next steps in your cat’s treatment plan. This is crucial, as home remedies or information you find online can be unsafe.

close up fleas on cat
Image Credit: KanphotoSS, Shutterstock

Why Doesn’t Hot Water Kill Fleas?

Water alone will not kill fleas because they can survive for around 24 hours if you manage to submerge them in water. Further, most of the flea life cycle is not on your cat, but rather in your home or environment. These forms of the flea simply aren’t easily treated with water.

divider 3 paws

How Effective Is Hot Water in Getting Rid of a Flea Infestation?

The lifecycle of a flea is incredibly complex, which means getting rid of them from your home can be tricky. There are typically four life stages: egg, larva, pupa, and adult. During the pupa stage, they are protected from repellents and insecticides for days, weeks, or however long they deem safe because an adult won’t emerge until there is a host close by, which they will sense by their body heat or movement.

This means getting rid of the fleas on your cat or any other pets in the home is only one part of a long journey.

When you contact an exterminator, be sure to mention you have pets, so they use pet-safe chemicals. Your pets and family must move to another location while the technicians treat your home.

A soapy bath may help remove the fleas on your cat, but it’s often ineffective since the flea population resides in your carpet, molding, linens, and anywhere your cat spends time in your home. There are several commercial pesticides and DIY formulas targeting fleas, but the best technique is to get a flea preventative from your veterinarian and have a professional pest control service treat your home for the pests.

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

Final Thoughts

Hot water is not an effective flea treatment, therefore, it should never be used to treat fleas on your cat. However, a warm soapy bath can provide temporary relief for your pet by removing the adult fleas. It’s important to speak to your vet about treatment methods and preventative solutions for keeping fleas out of your home since it’s the safest and most effective method for treating your cat. Eliminating an infestation is complicated, thanks to the fleas’ complicated lifecycle, but with the help of your vet and pest control expert, you can kill the fleas and help your itchy feline.

See also: 


Featured Image Credit: M-Production, 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.

Talk With A Vet Online

Peace of mind,
anywhere, anytime

Affordable vet advice

7 Natural Remedies for Cats With Asthma: Our Vet Explains

If you have seen someone have an asthma attack or experience them yourself, you know how scary they can be. The feeling of...

Scottish Fold British Shorthair Cat Mix: Info, Pictures, Temperament & Traits

The Scottish Fold is instantly recognizable due to their folded-over ears and thick, short fur. The British Shorthair has characteristically large round eyes...

Kidney Failure in Cats: Vet-Reviewed Facts & When to Euthanize

Most of us wish our pets could live forever, but unfortunately, we dream the impossible dream. While no pet owner wants to face...

Why Does My Cat Keep Meowing? 7 Reasons Why They Won’t Stop

Meowing is one of your cat’s main sources of communication with you. Most meows are harmless and hearing them is a normal part...

More related

How to Handle Food Aggression in Cats: 11 Vet-Reviewed Tips & Tricks

Dealing with food aggression in a cat can be overwhelming and even scary at times. Food aggression can exhibit itself in a variety...

10 Best Microchip Cat Flaps in 2025 – Reviews & Top Picks

It may not be possible for your cat to be trusted with their own front door key, but a microchipped cat flap is...

How to Tell if a Mother Cat Has Abandoned Her Kittens: Vet-Reviewed Facts & FAQ

Although it doesn’t happen too often, after giving birth, a mother cat may refuse to care for a particular kitten in her litter,...

Why Is My Cat So Naughty? Vet-Approved Feline Misbehavior Explanation

Cats may engage in tons of behaviors that seem “naughty” to us without actually being naughty. Often, this may be the result of...

Keep reading

How to Give a Cat a Bath Without Water: Vet-Approved Step-by-Step Guide

Most cats don’t like to get baths. The good news is that cats are excellent groomers and usually keep themselves clean enough, so baths aren’t necessary. However, sometimes your cat needs help keeping clean, and a bath is required. If...

toyger kitten wrapped in a towel

Is Cooked Chicken Good for Cats with Hyperthyroidism? Vet-Approved Benefits & Tips

Hyperthyroidism can be a heavy diagnosis to get your head around. Once you learn about an overactive thyroid, you realize that certain changes may need to take place with what your cat eats. A vet will likely give you recommendations...

boiled chicken in a pot broth close-up

Does UV Light Kill Fleas on Cats? Vet-Reviewed Effectiveness, Safety & Alternatives

Fleas are pernicious little parasites, and it can be hard to get rid of them on your cat. This fact has given rise to the rumor of UV light killing fleas, but is it true? UV light can technically kill...

Lamp ultra violet

How Hot Is Too Hot for a Cat? Vet-Approved Facts & Summer Safety Tips

We are constantly adjusting the temperatures in our home according to how hot or cold it is outside. However, most pet parents don’t think about their pets when doing this. Can cats get too hot? If so, then how hot...

cat heat

Why Does My Cat Wake Me Up at Night? 8 Vet-Reviewed Reasons & Solutions

Cats can have annoying habits, like scratching the furniture and climbing above the cabinets, but one of the most annoying has to be when they wake you up at night, especially when you have work in the morning. So, why...

ginger cat on bed at night near window

Does Fish-Flavored Cat Food Cause Hypothyroidism? Vet-Approved Facts

Just like humans and dogs, cats can suffer from hypothyroidism, though it is quite rare. This endocrine disease is mainly due to the decrease in the secretion of thyroid hormones, which when in short supply, cause an imbalance in the...

cat eating food in the bowl

Does My Cat Need Breed-Specific Food? Vet-Approved Nutritional Advice

The pet food industry is exceedingly complex and overwhelming. Every time your cat needs a new bag of food, it seems there are a handful of new pet diet trends on the rise. One diet trend that is making its...

maine coon cat eating

Does My Cat Hate Me? Signs, Causes & What to Do About It (Vet-Verified)

Cats don’t really feel hatred, but they can be scared, irritated, stressed, anxious, or even in pain. And these states of mind can make it seem like your cat hates you based on your interpretation of your cat’s actions. Whether...

Woman giving a grumpy persian cat a kiss on the cheek