Lice and Pools: Does Chlorine Kill Lice?

swimming featured image

Discover if lice can survive and spread in swimming pools. Can swimming in a chlorinated pool can kill head lice? How can you prevent getting lice from a pool?

12 million kids will get head lice this year. Is your child one of them?

If it feels like lice is more prevalent than it was in the past that's because it is. Why? Because lice have become immune to over-the-counter treatments and home remedies that worked in the past.

Whether you’re wondering if your child can get lice from the pool or if swimming in a chlorinated pool can kill lice, we’ve got you covered.

This article answers the following questions (feel free to click a link to any topic):

Does Chlorine Kill Lice?

Will Lice Drown in A Pool?

Can You Catch Lice From the Pool?

How to Prevent Getting Lice From A Pool

Let me introduce myself...

lice expert

Hi there! I'm a lice expert, lice coach, Registered Nurse, and the creator of My Lice Advice. I help people with lice every day in my lice treatment center, in school districts, and in government work. But the thing I love the most is empowering parents to get rid of head lice in ONE DAY at home! 

You can eliminate lice in one day using the same proven professional technique I use in my lice center on your child. Follow along with the Step-by-Step Video System, and when you're done with the videos you're done with lice. PERMANENTLY!

Super Lice

A super lice bug at high magnification.

Head lice today have grown immune to all of the old treatments that worked in the past. So millions of parents around the world are looking for the best ways to treat and prevent lice. 

If your child has lice and you’ve struggled with it for a while, you should know that it is not your fault. The current strain of head lice is immune to pesticides found in over the counter treatments and most prescriptions.

A pesticide treatment won’t kill lice, no matter how long you leave it on.

Lice these days are called “super lice” because they have genetic mutations that make them extremely difficult to kill. 

The studies show that about 98% of lice today have the super lice mutation.

Before talking about whether or not Chlorine kills lice, you should ask yourself a critical question...

Do you want to KILL LICE or GET RID OF LICE???

Because there’s a big difference! Killing lice today, does NOT get rid of lice. If you focus all of your energy on killing lice bugs, you will NEVER get rid of lice! 

Here’s why...

When you have lice you have 2 problems, lice bugs, and lice eggs. Often people focus all of their attention on lice bugs, but neglect the much bigger problem- LICE EGGS! Those eggs are full of little lice bugs, just waiting to hatch and start this whole lice cycle all over again! That’s why you keep getting lice back!

Does Chlorine Kill Lice?


Unfortunately, no amount of chlorine or swimming is going to kill head lice. Lice are immune to chlorine, just like they are immune to thousands of other things, including Lysol, hydrogen peroxide, and most household cleaners.

It doesn’t matter how much chlorine is in the pool; you’re not going to kill head lice.

In one study, researchers completely submerged several lice in chlorinated water. 

The chlorine didn’t kill a single lice bug.

How Does Chlorine Affect Lice?

chlorine affect lice

When you submerge lice in chlorinated water, this is what you’ll usually see…

As soon as lice come into contact with the water, they’ll close up their breathing holes so they won’t drown, and within a minute, lice go entirely immobile.

After about 10 minutes of being immersed in water, lice will go into a “hibernation- state” and appear dead, but don’t be fooled!

This “hibernation- state” protects lice, making it so that they can conserve energy, and no water will penetrate their breathing holes. This ability is a common phenomenon, often termed as “playing dead” by researchers.

Within minutes of being removed from the pool, lice will “resurrect” back to life. 

These lice will be back at full strength and capable of breeding just as they did before being immersed in pool water.

Can Lice Drown In A Pool?

dirty pool

Yes, but it’s going to take a very long time. Some sites say that lice can not survive more than 4 hours immersed in water.

Four hours is simply not true. 

Scientists tested the “Drowning” lice theory in two separate studies. In one study, five hundred head lice were removed from individuals and treated differently. They immersed some lice in water, others in other liquids, and did not immerse the control group in anything. Of the lice immersed in water here are the results:

6 hours in water = 100% of lice survived

24 hours in water = 50% of lice survived

The lice were initially in “hibernation mode” when removed from the water after 24 hours, but 50% of lice were alive after being removed from the water.

Even more alarming is that when they submerged lice in water for 24 hours, the lice survived longer than the lice they didn’t submerge at all.

Can You Drown Lice?

featured image drown lice

Suffocation Methods Don’t Work

Many sites say that lice can hold their breath for no more than 4-8 hours, which is NOT TRUE! As the research above indicates, many lice can hold their breath for more than 24 hours! So, trying to “suffocate” lice with just any oil will not work. 

Common “suffocation” methods that do not kill lice are olive oil and mayonnaise.

Some claim that if you leave olive oil or mayonnaise on the head for 8 hours, it will drown lice. That is not true.

If you use a “suffocation” method like this, you’ll see lice go into “hibernation-mode” like they do when you immerse them in water. And, about an hour after you rinse out these home remedies, the lice will resurrect back to life and be at full strength. 

What's the FASTEST Way To Get Rid of Lice?

The purpose of My Lice Advice is to help parents get rid of lice as fast as possible. And the fastest way to get rid of lice is to get rid of lice in one day, no re-treatments. This is how lice professionals like myself get rid of lice in lice centers. Most people assume that lice professionals use some kind of crazy strong lice product or something. But the truth is that's not how lice professionals get rid of lice so fast....

When I treat lice in my lice center I don't use any toxic chemicals or special treatments. In fact, you can do a professional lice treatment at home without buying any lice products. I teach parents how to do this professional technique on their children at home, on my page Get Rid of Lice Like A Pro!

In Get Rid of Lice Like A Pro! you learn how to get rid of lice in less than a day by doing what the pro's do. And it's gone permanently- there are no re-treatments, and no messing around with lice kits. You do the professional  technique on your child at home, you kill all of the lice and the lice eggs in one session and then you're done with lice. 

That's the FASTEST and MOST EFFECTIVE way to get rid of lice. You can learn how to do it by clicking here.

Can Lice Become Dislodged in a Pool?

Lice Claws

Lice can become dislodged in a pool, but it is extremely unlikely. It is even less likely for lice to come off in the pool than for them to come off when your hair is dry.

When lice submerge in water, they close their breathing holes and hold on tight. Lice have little crab-like claws on the end of each of their six legs. These claws enable them to grip on to the hair without the risk of falling off. Check out those claws!

Can You Get Lice From a Swimming Pool?

spread lice in pool

You can get lice from another person in a swimming pool, but it is less likely than getting lice outside of a swimming pool for the following reasons:

Lice go immobile in water

lice go immobile

When you expose lice to water, they instinctively close their breathing holes and hold on for dear life. I’m sure this is a survival tactic from over the years, because if they didn’t grip on when the water hit them, then they’d quickly die in the shower. (But they don’t!!)

Additionally, prolonged time in the water makes them less likely to transfer because they go into “hibernation mode,” which means that their little crab-like claws are locked into place on hair and will not be coming off.

Can lice swim?

lice can't swim

If by chance lice came off of someone in the pool lice can not swim over to another head, because lice cannot swim! Instead, head lice would begin to make their way to the bottom of the pool slowly. Since children’s hair isn’t usually brushing the bottom of the pool often and lice cannot swim, and lice will be immobile in hibernation mode, the risk of getting lice this way is slim to none.

Research shows lice don’t transfer in pools


Enough people were wondering if lice spread in swimming pools that it was the subject of research. In the study, multiple people with head lice swam in a chlorinated pool for 30 minutes.

No lice came off their heads or transferred to anyone else.

What Can I Do to Prevent Getting Lice in a Pool?

prevent lice

While it is unlikely that you will get head lice from a pool, it’s essential to understand that lice are most often passed directly from one person’s head to another. Some estimate that this “head to head” contact accounts for 90% of head lice cases. The other 10% of lice are transferred from one person to another from inanimate objects that come into frequent contact with hair such as hats, hairbrushes, and clothing.

If you are worried about your child getting head lice in a pool here are a couple of tips:

#1 - Avoid Head-to-Head Contact

head to head

You’d be surprised how often children’s head’s touch. More common times for lice to spread are

  • Hugging when greeting or leaving someone
  • Snuggling on the couch watching a movie
  • Resting your head on someone’s shoulder
  • Whispering close to someone’s ear
  • Sleeping on the same pillow or in the same bed at sleepovers
  • Taking “selfies” and other pictures that require people to get close

While your children won’t be watching a movie together or sleeping on the same pillow in the pool, the same principles apply. If your child can keep her head to herself, that’s the best way to prevent lice.

#2 - Put Your Hair Up in a Tight Bun or Braid


Lice are stealthy in hair, and they use their claws to climb from one hair to another. You can decrease your chances of getting lice by keeping your hair up in a tight bun or braid because the less your hair is available to grab onto, the less likely you are to get lice.

#3 - Wear a Swim Cap

swim cap

Head lice only live on human hair, so if your child’s hair is tucked tightly in a swim cap, then it doesn’t matter how much hugging and playing she’s doing in the pool she has no chance of getting lice.

This might be a good idea anyway to protect your child from the drying and damaging effects of chlorine.

#4 - Don’t Share Towels, Swimming Caps, or Hair Brushes

girl towel

It is much more likely for your child to get head lice outside of the pool than it is for her to get lice in the pool. Lice can be passed by sharing items that come into frequent contact with hair.

Culprit items that you use on your hair after a day in the pool are towels, swimming caps, and hairbrushes. Be sure that your child has their own of each of these things and that she never shares them.

#5 - Spray Your Hair After Swimming

spray hair

Some of the best lice prevention is using a daily lice prevention spray or shampoo every day.

One of the best forms of prevention is making your hair undesirable to lice by using a lice prevention spray or shampoo daily.
You can use lice’s powerful sense of smell against them by putting scents in the hair that repel lice. Scents that deter lice are often called lice repellents. You can make your own lice repellent spray using my DIY tutorial or purchase a lice repellent spray and spray your daughter’s hair every day with it.

Don’t just buy any repellent thinking they’re all good. You can check out my article to find out which ones work to deter lice.

Do Chlorinated Pools Affect Lice Eggs?

Nope, lice eggs have a thick waxy coating on them, making them pretty much impossible to kill. 

Chlorine won’t kill them, and you absolutely can’t drown them!

In a study, lice eggs submerged in water still hatched 87% of the time.

Even dimethicone treatments are not effective at killing lice eggs.

The fastest, easiest, and most effective way to get rid of lice eggs is with my technique.

Does Salt Water or Sea Water Kill Lice?

ocean water

The same researchers testing chlorinated pool water on head lice also examined the effects of saltwater and seawater on lice and got similar results. Lice submerged in saltwater and seawater for an extended period survived. 

Can My Child Go Swimming With Lice?

Your child should not go swimming or to school, or anywhere until you get the lice problem taken care of. Lice are very contagious. It’s not so much that your child will spread head lice in the pool, but that your child will spread head lice everywhere else they go. Before going to the pool, take care of the head lice problem.

What If Your Child Gets Lice After Swimming?

If your child’s head begins itching after swimming, it may be lice, or it may just be the result of chlorinated pool water irritating their skin. The best thing to do is to check your child for lice. Check out my tutorial How to Check Your Child for Lice to learn how.

scratch head

If your child’s head begins itching soon after swimming and you find that they have head lice, it’s still unlikely your child got lice from the pool.

Itching is one of the later signs of head lice. Most people do not begin itching until they have had head lice for a full month! This is because it is not the lice bugs themselves that make individuals itch; it is an allergic reaction to lice saliva. This allergic reaction to lice saliva usually takes about a month to develop. So, if your child’s head is itching and she has lice, it’s safe to assume that she’s had it for a while.

When choosing a lice treatment, DO NOT go to your local store and buy a popular big name treatment. They don’t work.

Better Home Remedies Than Chlorine

If you are looking for an all-natural way to get rid of lice then the very best and FASTEST way to do that is by learning how to do a professional lice treatment on your child at home. You don't need to buy any lice kits or lice products, and you can be done with lice in less than a day. That's what I teach on my page Get Rid of Lice Like A Pro!

If you're set on doing it on your own and you want to hunt around for a home remedy then you can find a list of much better home remedies in my article 37 Home Remedies for Lice. In that article I evaluate every home remedy for lice and let you know how many lice and lice eggs they kill.

You should know that even the best home remedies only kill 80% of lice bugs and no home remedies kill lice eggs. If you decide to go that route then plan on retreating and nit-picking for about 3 weeks.

You can find the Home Remedies article here.

Summing It Up…

Chlorinated swimming pools do not kill lice. Swimming in seawater or saltwater does not kill lice either. Lice are also not likely to be spread in a pool, because they become immobile in hibernation-mode and they can not swim. Studies support that lice have not been able to transfer in swimming pools. 

Lice are not likely to drown in water because when lice come into contact with water, they can hold their breath for a very long time. Even if you were to soak your head in water for 24 hours, over 50% of head lice would still survive! When immersed in water, lice go into hibernation mode, appearing dead, but resurrecting back to life within an hour at full strength. 

If you plan to use a home remedy for lice then I DO NOT recommend you use Chlorine. Instead I’d recommend you use a more effective home remedy like the ones I cover in this article. But, understand that there is no home remedy or treatment out there that kills all lice bugs or lice eggs, so it’s going to take you several weeks to get rid of lice using a method like that.  If you want to get rid of lice quickly, you should check out the How to Get Rid of Lice Like a Pro! Online Course and get rid of it in ONE DAY.

If you are worried about getting head lice in the pool, the best principles to follow are to avoid head to head contact, wear your hair in a braid, bun or swim cap, and avoid sharing items such as towels. Spraying your child’s hair with a lice prevention spray every day also helps to prevent lice in or out of the swimming pool.

All the best,

Theresa, My Lice Advice


Theresa is a lice expert with years of experience curing children of lice. She currently works with government agencies and non-profit organizations to help children with the most severe head lice infestations in the US.

Originally trained as a Registered Nurse, she changed specialties to study lice. Later, she opened a lice treatment center where she perfected the PRO technique she teaches in the Get Rid of Lice Like A Pro online course. She now works helping those struggling with lice around the world.

She is the creator of, one of the top lice informational websites in the world and she teaches parents around the world how to get rid of lice in less than a day in the Get Rid of Lice Like a Pro online course.

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