[ULTRASONIC INSECT REPELLENT 2021] Our mosquito repellent uses the latest ultrasonic dual technology chip. ULTRASONIC INSECT REPELLENT Using the principle of ultrasonic waves, the frequency is changed to stimulate the auditory system of mosquitoes and other pests, thus driving them out of our homes and living spaces. Completely harmless and non-invasive, the ultrasound device is more effective than traditional mosquito traps. 【100% safe and non-toxic】: The mosquito repellent ultrasonic is 100% safe and harmless to pregnant women, babies, children and pets. Ultrasonic insect repellent, noise-free, chemical-free, heat-free. Consumption is minimal, it is a physical method of controlling rodents and mosquitoes, the mosquito repellent eliminates the need to use many insecticides. If you have hamsters at home, please do not use this ultrasonic insect repellant. 【Effective and safe】 Ultrasonic mosquito repellent ultrasonic wave area is 80-120 square meters, as ultrasonic waves can not