Getting rid of ants: boric acid or borax? |

Getting rid of ants: boric acid or borax?

Oldies say the presence of ants in a house means luck. I never believed that crap. I understand that ants play an important role in ecology, that they hasten the decomposition of food and that they make the soil friendlier to plants when they bore and make holes.

But in and around the house — ants are pests. I don’t need them to decompose anything inside the house. In fact, what is there to decompose? Ants eat fresh food and make it inedible to humans. Just last week, they somehow managed to creep inside a tightly covered container of vegetable shortening. They ate their way through a thick plastic bag of glutinous rice. They were even in the mouth of vinegar bottles with screw-on caps. They embedded themselves in clothes hanging in a clothesline drying under the sun. It’s a nightmare.

When Speedy came across information about how boric acid can effectively get rid of entire ant colonies, he took the trouble of locating chemical company to buy a bag of boric acid. He read, learned the preparation and basically followed the instructions in the video below.

Sugar, boric acid, water, cotton balls. Speedy has soaked cotton balls in the boric acid-sugar solution and placed the cotton balls in strategic parts of the house away from the cats who may be adversely affected should they decide to lick the sweet fluffy things.

There are other videos that use a solution of Borax and sugar like this one below.

What’s the difference between Borax and boric acid, and which is really the preferred ingredient for homemade insecticide? I read up a bit.

1. Boric acid is a weak acid of the chemical boron. Remember the periodic table from high school? Boron is on the upper right side. Boric acid is found in sea water, fruits and plants.

2. Borax is the salt of boric acid. It is commonly used for laundry as it is an effective stain remover.

It is boric acid, not borax, that is used for making insecticides. It is toxic, you need protective gear to handle it and under no circumstances should you ingest or inhale it. Other than that, it is “safe.”

As insecticides, some act as stomach poisons in ants, cockroaches, silverfish and termites, while others abrade the exoskeletons of insects…

Available studies indicate that technical boric acid is practically nontoxic to birds, fish and aquatic invertebrates, and relatively nontoxic to beneficial insects. [EPA R.E.D. Facts]

Per the instructions in the first video, we’re supposed to replace the cotton balls a few times before seeing substantial results. Considering how everything else has failed, we’re really hopeful.

Stock photo of red ant from Pixabay


  1. Anne says

    Hi, i’ve been following your bog for quite some time now. Your recipes are a big help to me:) thanks!

    As to your ant problem, have you tried using Terro? It can be bought in true value and handyman. It’s effective for me, although ants do come back after sometime. I always keep a stock of it in my house and put it in those corners every so often.

  2. peterb says

    As i type this I am seeing ants crawling on the side of my cpu. There’s a lot more of them in other parts of the house. There was a time they were on the bath towels, which needless to say sucks big time if you’re coming out of the shower! Chalk works to drive them away, but i need them dead! I hope that solution works!

    • says

      Re: towels. Sheesh, I’ve been victimized so many times I’ve lost count. Ever experienced putting on clean jeans only to take it off again as fast as you can because dozens of ants have bitten your thighs? :shock:

  3. Carol B says

    I think now I know why the boric acid we put around the ant colony in our lawn were just ignored by the intelligent ants. The instruction in the container didn’t say to add something sweet to it.

    Since it didn’t work, a neighbor suggested malathion. We mixed 1 tbsp of malathion to 500 ml of water and pour it around and in the colony. Voila, the ants and its colony were gone. This will be the second year that we don’t see ant hills soil in our lawn. The only problem is that it has unpleasant odor.

    I learned also that this is what the city government is using to control mosquitos around the city. They spray the whole city with it.

  4. Paula F says

    Hi Connie. I would also recommend Terro, as another reader noted. That has worked best for me whenever I have an ant problem.

    I’ve also read from other websites that mopping countertops (or other areas that tend to get ants) with white vinegar can help. This seemed to reduce the problem, but not totally solve it.

    Btw, I live in the US, in California. So what works against ants here may be different from in Manila. But that said, it’s worth a shot.

  5. Kris says

    Try putting laurel leaves in the source colony, path, wherever they are. Works wonders!