Powerful Performance: This latest ultrasonic rodent repeller has two chips, which will put out stronger and more focused ultrasonic waves, which will make it harder for pests and rodents to approach than before. bed bugsbed, spiders, ants, cockroaches and mice stay away from you Houses! . Safety and environmental protection: The insect repellent contains no chemicals, no radiation, no smell, no dead insects, no batteries, and gives you 100% safety guarantee. His ultrasound only affects the parasites, and the earscan’t detect sounds, so it won’t interfere or irritate humans and animals! . Small and light, wide range of applications: The new small square design is very cute, cartoon style, only 27g each, ultra-light and stress-free, widely used in homes, warehouses, offices, hotels , etc! . Effective coverage rate: Ultrasonic insect repellent is effective indoors under 1600 square feet. We recommend installing one unit per room for best and best results. For larger storage areas,we