【2021 Latest Dual Chip Technology】: The enhancement comes with enhanced low frequency waves and is much safer for humans and pets that won’t disturb your sleep at night. It includes sound generators that mimic predators to repel foxes and raccoons through bionic waves. For heavily infested areas, use 5 units of pest repellent to effectively eradicate insects and pests. It is a beneficial flea treatment for cats and dogs. 【Wide Effective Coverage】: The insect and rodent repellent is effective in an indoor area up to 1600 square feet. It is widely used in homes, warehouses, offices, gardens, hotels, etc. We recommend that you install one for each room because ultrasound cannot penetrate walls and solid objects. But for areas with serious pests, we suggest installing 2 or more devices for another room. They are not effective for other rooms if you install the device in one room. 【Safe and Environmentally Friendly】: Ultrasonic pest repeller chemical free, non-toxic, less power
