The Bell + Howell Ultrasonic Pest Repellers 3 Pack offers powerful indoor pest control using advanced ultrasonic sound waves to help repel mice, spiders, ants, roaches, and other common household pests. This plug in pest repeller kit includes three units, each featuring an extra AC outlet and built-in night light for added convenience without taking up valuable plug space. Designed for safe, nontoxic use around families and pets, this pest control device emits multi-frequency ultrasonic waves that create a hostile environment for pests while remaining silent to humans. Ideal for kitchens, bedrooms, basements, garages, hallways, and living areas, each unit covers one room for complete whole-home protection. Enjoy a chemical-free, maintenance-free pest control solution that keeps your home protected day and night.