How To Kill Mosquito Larvae In Pool

Mosquitoes are pesky insects that can ruin your outdoor fun. One of the ways they reproduce is by laying their eggs in stagnant water, including your pool. If you notice mosquito larvae in your pool, it’s important to take action to eliminate them before they turn into adult mosquitoes. In this article, we’ll discuss various methods on how to kill mosquito larvae in pool.

Why You Should Kill Mosquito Larvae in Your Pool

Mosquitoes are not just a nuisance, but they also carry diseases such as Zika virus, dengue fever, and West Nile virus. By eliminating mosquito larvae in your pool, you’re reducing the risk of mosquito-borne diseases.

How to Identify Mosquito Larvae in Your Pool

Mosquito larvae are tiny, wiggly, and have a distinct shape. They look like small black worms that move in a jerky motion. You can easily spot them in the water if you look closely.

Methods to Kill Mosquito Larvae in Pool

1. Use Mosquito Dunks

Mosquito dunks are a popular and effective way to kill mosquito larvae in pool. These dunks contain a bacteria called Bacillus thuringiensis israelensis (BTI) that is toxic to mosquito larvae but safe for humans and pets. Simply drop a dunk into your pool, and it will dissolve over time, releasing the bacteria into the water.

2. Apply Larvicide

Larvicides are chemicals that are specifically designed to kill mosquito larvae. You can find larvicides in the form of granules, tablets or liquid. Follow the instructions on the label to apply the larvicide to your pool.

3. Clean Your Pool Regularly

One of the best ways to prevent mosquito larvae from breeding in your pool is to keep it clean. Skim the surface of the water regularly to remove any debris, and clean your pool filters frequently to prevent any buildup of organic matter.

4. Use a Pool Cover

Covering your pool when it’s not in use can prevent mosquitoes from laying their eggs in the water. Make sure to properly cover your pool to ensure no gaps where mosquitoes can enter.

5. Use Natural Remedies

There are several natural remedies that can help kill mosquito larvae in pool. These include adding salt to your pool, using essential oils like tea tree or lavender, or adding garlic to the water. While these methods may not be as effective as chemical solutions, they are safer for the environment.


Q: Is it safe to swim in a pool with mosquito larvae?

A: While mosquito larvae are not harmful to humans, it’s best to avoid swimming in a pool with them as they can carry diseases.

Q: How often should I apply mosquito dunks?

A: Mosquito dunks usually last for about 30 days, so you should apply them once a month.

Q: Can I use bleach to kill mosquito larvae in pool?

A: While bleach can kill mosquito larvae, it’s not recommended as it can be harmful to the environment and may damage your pool equipment.


Mosquito larvae in your pool can be a serious problem, but there are several methods to eliminate them. By regularly cleaning your pool, using mosquito dunks or larvicides, and covering your pool, you can keep your pool mosquito-free and reduce the risk of mosquito-borne diseases.