[Safe and Convenient] The ultrasonic pest pest is a household product that works 24 hours a day, 365 days a year, without any poisonous, poisonous or odorous chemicals. The ultrasonic frequencies are inaudible to humans and animals , and are completely harmless and harmless to pets and children. 【Latest Ultrasound Technology】Using an intelligent dual-chip design, the ultrasound rejection device stimulates the auditory nerve with ultrasonic waves in the frequency range of 20kHz-65kHz, destroying the sense of smell and the system central nervous system of parasites and rodents. This type of ultrasonic protector can effectively repel pests such as mice, mosquitoes, spiders, insects, ants, flies, cockroaches, fleas, etc. In home. [Wide Coverage] The effective range of each insect repnt can reach 60-80 square meters. It is recommended to install this ultrasonic insect repnt vertically 10-32 inches from the ground. If every room is equipped with ultrasonic insect repnt, the best effect can