Does Borax Kill Carpenter Ants

I would like to address a question I often receive in my email inbox: “Does Borax Kill Carpenter Ants?” The short answer is yes, it does, but there are also some important points to consider.

Do Borax and Borate Kill Carpenter Ants?

Borax and Borate are two substances that are often used to kill ants. Borax is not a poison and does not harm humans, but it can harm pets and other animals.

Carpenter ants will die if they consume enough of the substance. If you don’t want to use borax, you can try other methods such as pouring boiling water or coffee grounds into the nest.

You could also try using a plunger to force the nest out of its location.

What Effect Does Borax Have on Carpenter Ants?

Borax is a household cleaner that can be used in a variety of ways. It has been used for centuries to kill pests, including ants.

Borax works by dehydrating the ants and essentially sucking up their water from within their bodies.

This kills them quickly.

Here are some steps to use borax against carpenter ants:

  • Pour borax into the cracks where you see the most activity
  • Fill small empty containers with borax and place them along ant trails
  • Sprinkle borax around your home’s outside foundation

ALSO SEE: Does Alcohol Kill Bed Bugs?

How to Use Borax for Killing Ants

The best way to use Borax to kill ants is by sprinkling some in their nest. Once the ants eat and bring it home, it will soon kill the queen as well as all of the other ants.

Make sure that you sprinkle enough Borax in the nest so that they won’t be able to take it back outside.

The next day, check for any signs of life and if there are none, then throw out the dead ants away from your home.

Borax Ant Killer Recipe Outside

If you use borax as an ant killer, it will not kill carpenter ants. Carpenter ants are attracted to wet wood and they drill their way into the wood to build their nests.

Borax will not kill them because it is not water-soluble.

Method One:

  • You can pour borax down the holes where you see carpenter ants coming in and out of, but some may still escape.

A better choice would be a non-toxic powdered bait that is made especially for carpenter ants.

Method Two:

Borax is an effective ant killer, but you must use it properly, or else the ants will not be affected by it.

  • Mix borax with sugar and then place the mixture in a glass jar with a lid. Place the jar near ant trails or where you see ants.

The ants will eat the sugar and then go back to their nest and feed it to their queen and other ants, killing them all.

How Long does it take for Borax to Kill Ants?

Borax is a natural insecticide that can be used for killing ants. It’s an effective way to kill carpenter ants because the chemical will not only kill them, but the borax will also damage the queen ant and she won’t be able to produce any more eggs.

In order to ensure that it’s working, you’ll need to wait a week before you see if it worked. Borax is generally considered safe, as long as it’s not ingested and you’re careful while using it around your family.

Why is Borax not Killing Ants?

Borax is not a toxic substance and it is not harmful to humans. Borax is not a pesticide, but it does kill ants by dehydrating them.

It’s unclear what is preventing the borax from working as expected on carpenter ants.

One likely possibility is that the ants are eating something sweet, such as our food or sugar, which prevents the borax from killing them because of their high sugar levels.

Where to buy Borax for Ants

You can order from Amazon here:

Borax can be used to kill ants for a number of reasons:

First, it is inexpensive.

Second, it will not harm kids or pets if they get into it.

Third, the borax won’t stain carpets or furniture and can be easily washed off of tile and concrete surfaces.

Does 20 Mule Team Borax Kill Ants?

Yes! 20 Mule Team borax is capable of killing ants if they’re exposed to it long enough.

To use borax as an ant killer, it must be mixed with sugar and water. The borax will eventually kill the ants if it remains at the nest long enough.

Will Sprinkling Borax kill Ants?

Borax is mainly a chemical cleaner. It will kill ants if it’s left on them for a long time, but that means coming into contact with the borax.

Sprinkling borax around the house will not eradicate an ant infestation.

3 Ingredient Borax Ant Killer

Borax is a naturally-occurring mineral that can be found in many products such as toothpaste, mouthwash, and laundry detergent.

It’s also inexpensive and easy to find at the grocery store. Borax is effective against ants because they use it to construct their nests.

The borax will interfere with the ants’ digestive tract and they will die.

To use this technique as an ant killer in your home, mix 1/2 cup of borax with sugar or honey to make it more attractive to the ants.

Sprinkle the mixture near the baseboards of your home where you have seen ants on surfaces such as counters, sinks, or floors.

What can I mix with Borax to Kill Carpenter Ants?

Borax is a laundry detergent that can be mixed with other chemicals to kill carpenter ants.

Borax should be mixed with sugar or honey, then sprinkled in the area where there are carpenter ant mounds or trails.

Borax mixed with boric acid and sugar can also be sprinkled near the ants’ entry point.

Does Borax really kill Ants?

Borax can kill ants by first blocking their breathing pores and then dehydrating them. It is best to sprinkle borax in the ant’s path so they walk over it and it is less likely to blow away.

Can I USE Borax and Sugar to kill Carpenter Ants?

Yes! Borax and sugar can be used to kill carpenter ants. Mix 2 tablespoons of borax and 4 tablespoons of sugar together in a bowl.

As the ants go for the sweet treat they will also ingest the borax, which will kill them.


Yes, Borax does kill carpenter ants. To get the best results, you should sprinkle borax onto a string of ant killers and place your bait into cracks and crevices where you find ants.

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