[2020 Latest Ultrasonic Technology] - With intelligent dual-chip design, the ultrasonic insect repeller stimulates the auditory nerve with ultrasonic in the frequency range of 20kHz-65kHz and destroys the central olfactory and nervous system of pests and rodents. This type of ultrasound can make rats, spiders, flies, fleas, ants, and other types of rodents and insects very uncomfortable, driving them out of our homes and habitats. [Eco-Friendly and Harmless to Humans] - This type of pest control is used to drive away pests by emitting ultrasonic waves. However, these ultrasonic waves are invisible and harmless to humans and pets. Electronic mosquito repellents can emit non-toxic ultrasonic waves without radiation. The ultrasonic protective agent is 100% safe, environmentally friendly and has low consumption. [Wide Coverage Area] - The ultrasonic repeller works on an area of 80-120 square meters, but the ultrasonic does not penetrate the walls. We recommend using at least 1 device per
