【Powerful Performance】: This latest ultrasonic rodent repeller has two chips, which will emit stronger and more concentrated ultrasonic waves, which will make it harder for pests and rodents to approach than before. Bed bugs, spiders, ants, cockroaches and mice stay away from you Homes! 【Safety and environmental protection】: The insect repellent does not contain any chemicals , no radiation, no smell, no dead insects, no batteries, and provide you with 100% safety guarantee. Its ultrasound only affects parasites, and the ears cannot detect sounds, so it will not 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】: We recommend installing one unit per room for best and best results. For larger storage areas, we recommend installing 2 or more devices! 【Easy to Use】: All