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 37 square meters. The Big Cheese Advanced Pest Repeller is safe to use around children and pets, including cats and dogs. It is recommended for use once rodent infestations are under control, providing a continuous output of ultrasonic frequencies that keep rats and mice away. The device is easy to use, plugging directly into power sockets and suitable for garages, lofts, sheds, and various areas in the home without affecting electrical wiring or domestic appliances.