Answer: Boric Acid will not kill rats, mice or any other mammals. To kill rats and mice you will need to consider using snap traps, glue boards or poison baits.

How does boric acid get rid of mice?

Mix one part boric acid with two parts peanut butter and shape into pea-sized balls. Leave out for the rats to ingest overnight and in a few days your rat problem will (hopefully) be gone. Just be aware that boric acid is poisonous to all animals, including humans!

What kills mice and rats instantly?

Set Traps

Traps are one of the most effective ways to get rid of rats fast. For best results, consider using snap traps, which are a fast method to kill rats instantly. To prevent other animals from getting into the traps, place them inside a box or under a milk crate.