Boric acid is a toxic acid which kills every cockroach that comes in contact with it. Many people like using boric acid to fight cockroach infestation because it does not repel roaches, and roaches aren’t resistant to it as well.

Boric acid is found in various vegetables and animals, but it can also be used to kill cockroaches if you have a concentrated solution of boric acid available. Boric acid is used in the form of power, and it sticks to the legs of roaches when they pass through it. Later on cockroaches clean themselves, and ingest the acid during that process. This is how boric acid ends up in the cockroaches in your house, and eventually kills them.

Boric acid is also safe to use for humans, and you can easily spread the boric acid powder in different areas of your house. You can use these boric acid against roaches for the best results.

Roaches Are Non Resistant to Boric Acid

While boric acid has been used for decades to kill cockroaches, they still haven’t built any resistant against this specific acid. That’s why boric acid is effective in killing roaches quickly in your house.

Also, roaches can’t detect boric acid, and this they can’t avoid contact with it. However, keep in mind that you should hire an expert to carefully assess the infestation areas in your house, and spread the boric acid carefully to achieve maximum effectiveness.

Additionally, never expect boric acid to wipe out all the cockroaches in one go, as multiple applications might be needed depending on the magnitude of infestation.

However, You Shouldn’t Over Apply

When you’re using a dust, you should avoid over applying the boric acid. You just need to use enough boric acid that will attach to the insect’s body, and will get ingested with the cockroach grooms itself.