The Big Cheese Advanced Pest Repeller is a humane solution that combines ultrasound and electromagnetic action to effectively deter rats and mice from your home. This dual-action device emits ultrasound waves while pulsing through household wiring, reaching rodent nest sites in walls, ceilings, and cavities. It covers areas up to 37m² and is safe to use around children and pets, including cats and dogs. The device is recommended for use once rodent infestations are under control, providing a continuous output of ultrasonic frequencies that keep rats and mice away. The Big Cheese Advanced Pest Repeller is easy to use, simply plug it directly into a power socket, and it's suitable for garages, lofts, sheds, and various areas in the home without affecting electrical wiring or domestic appliances.