Ant Clusters In The Pool

5 Easy Ways To Kill Ant Clusters In The Pool

In this guide, you’ll find out the reasons for ant clusters in the pool and also you will learn how to kill them in five easy steps. 

You’ll never need another guide to keep your swimming pool free of ants. There are also 5 easy methods to get rid of ants around and in the pool.

Clusters Of Ants In Pool – Why Does It Happen?

During any season of the year, your pool can become infested with ants. Ants are most active during the spring and summer months. After heavy rains during these months, you’ll find clusters of ants in your swimming pool.

Chunks of floating ants can be found in the middle of the pool, near the skimmer and the pool return jets.

What’s the worst part? It could also mean the filters and pumps have been infested with ants.

We’ll find out shortly why clusters of ants are infesting your swimming pool, but first, let’s see what types of ants are infesting your pool.

There are three kinds of ants that you’d find in your pool. Black carpenter ants with big heads, tiny red ants, which are also known as fire ants, and flying ants with wings. 

A flying ant with wings is a sexually mature ant. When they are about to mate, they grow wings. 

Upon mating, they shed their wings and establish a new colony where they can lay eggs.

That’s another story altogether.

For now, let’s get into the reasons for these clumps of ants floating in your pool.

First Reason For Ant Clusters In the Pool – Heavy Rains

When it rains heavily, your pool can become infested with ants. 

I’m sure you’re wondering how?

During heavy rains, ants’ nests in your yard or garden are destroyed. The flowing rainwater carries these ants into your pool. 

Fire ants are the most common ants that end up in swimming pools. 

Nests of fire ants are usually found outside. This makes them vulnerable to flooding when heavy rains fall.

Second Reason For Clusters Of Ants In Pool – The Summer Heat

Ants, like all creatures, require water to survive. 

Your pool attracts ants during the peak of the summer season and because it is so dry. 

Many ants fall into the pool when they walk on the pool’s edges to reach the water. 

Third Reason For Clusters Of Ants In Pool – Salty Pool Water

You can get salty pool water if you don’t maintain your pool well. 

Salty pool of water is a clear indication that something is wrong with your pool. 

Studies confirm that salty water attracts ants more than sugar does. 

What causes the water in a pool to become salty?

The pool water has unhealthy levels of TDS (Total Dissolved Solids). 

TDS is a measurement of all the solids and minerals dissolved in the pool water. 

A poorly maintained pool increases its TDS level due to the presence of minerals, salts, metals, and organic matter. 

Pool water with a salty or bitter flavor indicates high TDS levels.

In addition to attracting ants, high TDS levels in water can damage your pool filtering system, pump, and fixture.

Fourth Reason For Clusters Of Ants In Pool – The Ant Mating Season

The fourth reason is all about flying ants with wings. 

A flying ant is an ant that leaves its nest to mate and starts a new colony after reaching sexual maturity. 

Flying ants are attracted to your pool because they need water to quench their thirst. 

Also, the reflected light from the water surface of the pool attracts flying ants. This is because flying ants are drawn to light.

During the spring and summer months, and sometimes after heavy rain, you can find swarms of flying ants buzzing around your pool.

Often overlooked is the magnetic field from the electrical equipment that runs your pool, such as the pool pump.

Electrical equipment emits heat and creates magnetic fields. 

As these ants fly, their antennae catch the magnetic field, and the electrical equipment draws them. 

This is also why you find ants in electronic appliances like laptops and toasters.

Chewing on these flying ants can severely damage the pool pump and the plastic fixtures. Electricity can even pass through ants, resulting in a short circuit of the pool pump. 

Fifth Reason For Clusters Of Ants In Pool – A Buggy Yard Or Garden

That’s one of the obvious reasons why you have not just ants but also swimming pool bugs that float around and make swimming in your pool a very unpleasant experience. 

In addition, if there are shrubs and bushes close to the pool’s perimeter, then the ants and bugs can easily get inside the pool. 

Here are five reasons why you have ants in your pool. 

What causes these ants to form clusters? 

Let’s find out.

Why Ants Form Clusters In Pool?

In water, ants drown. They can, however, survive for days before they die. When ants are in the water, they cluster together so they can form a raft-like shape to reach the shore. 

In water, ants use that mechanism to survive.

You cannot see dead ants in a swimming pool but you will see clusters of dead ants there. Nevertheless, some of them are still alive.

You may get some nasty bites if you take a dip in your pool while a swarm of ants is floating around.

How To Get Rid Of Clusters Of Ants In A Pool?

Getting rid of ants in the pool will be a breeze now that you know what causes clusters of ants in the pool.

In the long run, you would secure your pool from ants by attacking the root causes of ants. 

If you want to get rid of ants in your pool, start by targeting the pool’s surroundings and the perimeter, which include the pool deck, the pool’s electricals, and the pool’s water.

This is the most comprehensive solution for getting rid of all hiding ants in your pool.

Let’s get started.

Treat The Entire Yard To Get Rid Of Ants Living Around Your Pool

You probably know that your yard or garden is the primary source of ants in the pool, especially if it is outside.

In order to stop those floating balls or clusters of ants in the pool, you should treat your yard or garden first. 

You can hire a pest controller to do it for you. 

However, if you want to do it yourself, you need some reliable products that can kill ants easily. 

Insecticide granules Talstar PL are the first. 

An effective way to kill bugs outdoors is by using insecticide granules. It is highly effective in killing insects and pests that nest beneath the soil’s surface. 

Insecticide granules are therefore deadly to pests such as termites and ants. 

The chemicals also kill larvae and bugs that live in soil, such as moth grubs, flea larvae, crickets, gnats, and aphids.

What is the mechanism of action of insecticide granules?

To use the granules, you just need to sprinkle them in your yard or garden, especially in damp, shady, and moist areas where ants nest. 

Insecticide granules sink into the soil and kill bugs hiding below the soil’s surface. 

Insecticide granules should be spread on places such as grass lawns, mulch, soil beds, and the grass perimeter of swimming pools.

The best part of insecticide granules is that they provide a long-term solution against termites and ants outside. 

It takes months for insecticide granules to work. 

To keep ants and other bugs away from your yard or garden, you shouldn’t need to apply insecticide granules more than once every six to nine months.

Talstar PL insecticide granules are safe to use around pets and children. 

Alternatively, you can use Talstar Pro insecticide spray if you are more comfortable spraying. 

Before using the spray, please read the directions on the label. 

Diatomaceous earth can also be used as an alternative. 

Diatomaceous earth is one of those anti-pest powders every homeowner needs. 

When diatomaceous earth penetrates the exoskeleton of pests like ants, bedbugs, and cockroaches, it robs them of the moisture inside their bodies and kills them. 

As with the granules, food-grade diatomaceous earth is also pet-safe and suitable for children. 

Keep your yard or garden clean to reduce pest infestations.

Get Rid Of Ants In The Swimming Pool Pump, Filters, And Plumbing

The pool’s electrical equipment, such as pumps and filters, also attracts ants. Electricity creates a magnetic field that draws flying insects to the equipment. 

Ants will build a mound in your pump, which will short it and cause permanent damage. 

The breaker box can also be infested with ants, which can cause all kinds of problems.

So, the first thing to look for is an ant mound around your pump. 

Clean the pump’s interior and exterior of all dirt and ants if the pump has any. 

The dirt and ants inside the pump can be removed by vacuuming or using a pressure washer.

Check underneath the pump’s motor housing for any ant mounds. Ants may dig deep beneath the motor housing and build nests there.

The ants will damage the windings and wirings of the pump inside the pump unless you remove the nests.

Ants use organic debris and dirt to build their mounds. These mounds also retain moisture.

Water will corrode the motors and metals inside the pump, which will permanently damage it.

As a result, it is crucial not only to kill ants inside the pump but also to kill the ants and their mounds around the pump. 

All you need is an ant spray like Ortho Home Defense Ant Killer For Lawn And Landscape. Before putting the pump back in its place, make sure there are no ants inside the pump or around the pump mounting area. 

The next step is to look at the pool filters, skimmers, and return jets. 

Water circulates through the pump via the pool return jets and the pool filter. 

Therefore, if you found ants in the pool pump, there must be ants in the pool filter and return jets. The water passes through them during circulation.

If you see any ants on the return jets and pool filters, clean them out immediately. The ants can chew through the pool filters and return jets, causing heavy damage. 

The pH of the pool water can be altered by damaged pool filters and return jets. This in turn will attract more ants to your pool.

If the filter and return jets of the pool are damaged, they should be replaced. Clean both of them if there are ants or debris on them.

Reduce Salinity Of Pool Water To Deter Ants From Entering The Pool

Ants are attracted to salty water. 

If the TDS levels of the pool water are too high, then it’s obvious the pool water is salty. 

If you want to reduce the salt levels in pool water, you’ll need a TDS meter. 

The water balance kit will include instructions on how to measure the TDS levels in the pool water and how to analyze the water. You should write down the results from the water balance kit, and contact a pool engineer to restore the pool’s TDS levels to normal. 

Get Rid Of Ants On Pool Deck

It is possible for ants to enter your pool through your pool deck, whether it is wooden or made of concrete.

This is a very likely scenario, especially if there are ant nests underneath the pool deck.

It is also possible for pool decks to develop cracks over time. Ants hide and build nests in those cracks.

Cracks should be checked. Those cracks should be sealed with a good quality sealant if there are any. 

You should also sprinkle Talstar PL insecticide granules under the pool deck if there is a gap between the deck and the soil underneath. 

It will get rid of the ants under the deck. 

You may also use an anti-ant spray or diatomaceous earth to eliminate ants from the pool deck.

Make sure you clean the deck of any dirt or debris, as well as dead ants. 

Keep Flying Ants Away From Your Pool

Black-headed ants and tiny red fire ants can be kept away from your pool by following the above steps.

Your swimming pool is invaded by these ants from the ground. 

What about the flying ants that land in your pool?

Flying ants are not as difficult to keep away from your pool as black-headed ants or fire ants. 

In order to protect your swimming pool from flying ants, you can take three simple steps right away.

Get a safety pool cover that is anti-reflective. 

Solar energy is not reflected by anti-reflective pool covers. As a result, your pool will not attract flying ants. 

In addition, add peppermint essential oil to the pool water. 

Peppermint essential oil is known to have insecticidal properties that keep bugs and ants at bay. 

Pour some water into the mixture and spray it around the pool. Additionally, add 10-15 drops of peppermint essential oil to the pool water. 

Make sure that the pool water is sprayed with peppermint essential oil.

That’s enough to keep all types of ants and bugs away from your pool. Peppermint essential oil mixed in the swimming pool water is safe to swim in.

Third, install bug zappers around your pool, especially near the pool lights.

A bug zapper around the pool will kill flying ants and mosquitoes attracted to the light.

Make sure your pool is clean and free of organic debris such as leaves and twigs.


The presence of ant clusters in pools is becoming more common than ever. 

The reasons why ants gather in your pool and why they form clusters are described in this post. 

Additionally, you’ve learned how to prevent these ants from invading your pool. 

Following are the steps you can take to keep your pool ant-free for life –

  • Get rid of ants in your yard and garden around the pool.
  • Get rid of ants in the swimming pool accessories like the pump, motor, filters, and return jets.
  • Reduce salinity levels of the pool water because salty water attracts ants.
  • Get rid of ants on the pool deck.
  • Keep flying ants away from your pool by installing an anti-reflective pool cover, bug zappers and adding peppermint essential oil to the pool water.

Getting into your pool isn’t just a problem for ants. Many other bugs can make swimming in your pool dangerous.

It is essential to keep these tiny bugs away from your pool as part of pool maintenance and for your safety.

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