Mice and ultrasonic mice: Rodent scratching on your wall, your house, your house? The night is long! The fierce battle with your intruders, rats, mice, dormice, weasels is coming to an end thanks to your ultrasonic equipment. Mice and Rat Repellent. Savings and Peace of Mind: The mousetrap is too expensive...a mousetrap or glue set, too cruel...a dangerous poison to our children and pets. Ultrasonic device used on rodents, extremely harmful to mice and rats, no chemical shedding in 3 weeks. Effective: Just plug the rat ultrasonic box into the outlet, no setting needed. Kill rodents within 3 weeks. Inaudible to human or animal ears. Manual : 1 device per room. Not suitable for insects (flies, spiders, cockroaches...).