Site about the fight against domestic insects

The use of boric acid from ants in the apartment

Эффективна ли борная кислота от муравьев и как ее правильно применять?

Of all the folk remedies from harmful insects in the house, boric acid is considered the most famous. It was used even when simple analogues of modern insecticides were not known. And applied successfully and effectively. The use of boric acid from ants has not lost its relevance today: it still successfully copes with detachments of pests in various apartments, houses and industrial premises.

How does this tool work and how to use it correctly to really get the desired effect? Let's understand.

Properties of boric acid

Boric acid is a widely known antiseptic. In pre-war time, it was used not only to treat open wounds, but also for oral administration.

Борная кислота: химическая формула (H3BO3)

However, later special studies confirmed that with regular use boric acid is excreted by the kidneys from the human body more slowly than it does. And when you accumulate to a certain amount, it becomes toxic. The acid was replaced with other, more modern antiseptic means, but it continued to be actively used in production.

By itself, boric acid is a white crystalline powder, odorless and tasteless, slightly soluble in water. It is widely used in industry and scientific activities, for the preparation of fertilizers, in photography, nuclear power engineering and many more.

Борная кислота представляет собой белый кристаллический порошок

We are also interested in its use against domestic ants.

By the way ...

At one time boric acid was even used in the food industry as an additive of E284, but later it was banned from being added to food.

When reacting with sodium compounds, boric acid forms a borax-salt, no less dangerous for ants than the acid itself. Due to the similarity of the properties of these substances in different recipes, they can easily be changed one to another.

Buy borax and boric acid from ants can be practically in any pharmacy: they are sold either in powder form or in solutions and are quite inexpensive. However, for the preparation of a sufficient number of baits, it will be necessary to buy several packages or bottles of the substance, since the remedy is dispensed without a prescription.

How effective is boric acid against ants?

Boric acid against ants is effective due to the fact that it affects the work of its nervous system. After absorption in the intestine, it spreads over the peripheral nerves of the ant and causes serious disturbances in the work of the nervous system, which in a few hours pass into paralysis and the death of the insect.

У муравьев борная кислота вызывает нарушения в работе нервной системы

It is interesting that even if the cousins ​​eat the remains of an ant fallen from a boric acid, they will have the same fate: for the death of a single ant, quite a tiny amount of poison is enough. If you find a nest of ants and sprinkle it with a solid circle containing the contents of one sachet of acid for 50 rubles, then almost the whole colony will die.

However, if the location of the colony is known, it is easier to destroy it with a vacuum cleaner or boiling water. Only if an anthill is not found, it is necessary to "play" with boric acid.

The drill from the ants works exactly the same.


"Everyone around is buying for hundreds of rubles all sorts of cans from ants, and then they are tormented while they finish their apartment. I bought five packages of boric acid by my mother's advice, scattered along the skirting boards in the kitchen and near the trash can and forgot about the ants in general. "

Ksenia, Teplodar

Boric acid for humans: dangerous or not

For humans, boric acid and borax are practically not dangerous. Moreover, they are quite harmless for all domestic animals: poisonous properties this substance has primarily on insects. That is why, regardless of whether there are cockroaches, fleas or house ants in the apartment, boric acid will be effective against all of them. Only the fleas it poisons at the larval stage (adults eat only blood and can not poison).

Toxic to humans boric acid can only be if you consume too much of it. However, even a whole package of powder (10 grams), accidentally consumed by a child, is unlikely to cause even a very weak allergic reaction. For serious poisoning, you need an amount of this drug that is never used to prepare poison from insects.

Пакетики с борной кислотой можно купить в аптеке

By the way, the poison itself with boric acid from ants can be cooked according to numerous folk recipes, and can be used in the form in which it is sold in a pharmacy.


"I thought for a long time and learned how to poison ants with boric acid. Finally, I decided. I was told that it is not even toxic to children. I made a bait with glycerine, laid it behind the fridge and in the closets, for two weeks they were there. The ants did not completely disappear, but they definitely became smaller. And then to me in a drugstore where I bought acid, advised to sprinkle it in the ventilation box in the kitchen. Now that gave the result! Apparently, the ants came from there, because after this, none of them at home did not see. "

Alena, Kiev

Boric acid and borax against ants are also good because when running through an insect on a powder placer, individual grains cling to its feet and travel to them until the pest removes them with its jaws and does not poison itself. In the same way, these grains penetrate into the nest itself, where even the ants that never leave the colony limits start to poison.

Thus, boric acid allows you to destroy the nest of ants, even when the location of the anthill is unknown.

Recipes and rules for the use of boric acid against ants

In the simplest case, boric acid powder, when fighting ants, is scattered in the places of the most frequent encounters with insects. And just under the skirting boards, under the bedside tables in the kitchen, under the trash can be sprinkled with a tool in any case: the ants will necessarily be here in search of edible.

However, it is even more reliable and effective to attract ants to boric acid and force them to either eat it or take it to an anthill so that its relatives feed themselves on the poison. To do this, apply several recipes for cooking poison with boric acid from ants:

  • 5 grams of borax or boric acid are poured into half a cup of water, then 10 grams of honey or jam and 40 grams of sugar are placed, mixed and poured into a flat dish. It should be placed near the trash can: this bait for house ants is very effective, as insects well smell sweet.
  • 2 tablespoons or two egg yolks are mixed with half a teaspoon of borax or boric acid, and small balls are prepared from the resulting mixture, laid out where ants are most often.

Яичные желтки, смешанные с борной кислотой, являются хорошей отравой для муравьев


In the last recipe, you can not increase the dose of borax or boric acid: this concentration is calculated that even if the ant feeds near such a bait, it will have time to kill another piece in an anthill. It is only necessary to increase the dose, and the workers' ants will die right next to the feeder, and the colony will at this time produce new ones.

  • in one tablespoon of water, add 2 teaspoons of glycerin, a teaspoon of honey, a third of a teaspoon of borax and 1.5 tablespoons of sugar, carefully move everything and from the received mass to roll baits. Obtained non-drying balls can be decomposed wherever ants can run.

Of course, it is undesirable for pets to find baits and eat them. There is nothing dangerous in this, but no pet will benefit either.

It should be understood that it will not be possible to quickly remove ants with boric acid. In the best case, this process will last for two to three weeks. But this method is effective even if the nest of ants is outside the apartment. In this situation, even the most powerful aerosols will be useless, and simple boric acid or borax will cope. So arm yourself with patience and boric acid, and the ants will very soon be going around your house a long way ... If someone from their colony can still walk ...

If you decide to fight the ants yourself, then we recommend using only proven in practice tools that have shown their high efficiency:

To record "Application of boric acid from ants in the apartment" left 7 comments.
  1. Nikolay :

    That was a long time ago. In the apartment there lived a pensioner deaf and with poor eyesight. Cockroaches ran day and night on the floor and walls. I bought boric acid, mixed it with flour (only for smell) and put it on the floor in saucers in two places. A week later the cockroaches were gone and we did not see them again.

  2. Ramil :

    I confirm the effectiveness of balls of yolks with boric acid. So my mother brought in her apartment cockroaches. It used to be something terrible, there were so many of them. Surprisingly, but really pulled out. Sometimes only single individuals crawl from their neighbors and that's it.

  3. Olga :

    I also had a lot of cockroaches for many years. And what only did not try. But they were saved only by boric acid with yolks in the form of balls, but then they did not become within a month. Although the first 2 weeks after that it seemed that there were a lot more of them, at first panicked, and then it turned out that they got out of the most secluded places and carried their feet away.

  4. meshanja :

    There were red ants in the apartment, could not bring anything, even terribly expensive and terribly toxic means specially for the ants. I bought a bottle of oleic acid, 1 liter, put it in the closet. And there are no more ants anywhere in the apartment. It turned out that oleic acid is a signal of danger in ants, and they leave from where there is such a smell. The bottle was never even opened, it is still sealed, though not airtight. And I do not hear from her any smell, even from under the lid of the bottle itself.

    Wikipedia writes that oleic acid is odorless, non-toxic to humans at all, and even contained in many edible nuts in quantities of up to 50%.

    Although it's an apartment. On the site, apparently, you need to open the bottle with acid.

  5. Katya :

    The ants were withdrawn, of course, for a long time, but six months later they were not remembered about them.

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