Ultrasonic insect killer: ultrasonic passes through walls or obstacles, the effect will be weakened. Our electronic mosquito repellent is equipped with a super powerful ultrasonic speaker, which can greatly increase its penetration and make it more potent, which can effectively kill hemostatic drugs. Multi-Function: The ultrasonic pest control device can solve pests in one stop. It is very suitable for repelling rodents, mice, mosquitoes, spiders, cockroaches, fleas, ticks, flies, ants and many. other parasites. Safety and Health: Contains no chemicals and noise and will not be detected by the human ear, so it will not interfere or irritate people, dogs and cats. The ultrasonic pest control device does not contain no chemicals, non-toxic and 100% safe for humans and pets. 【Safe for Humans/Pets】- By destroying the living environment of pests in a physical way, ultrasonic waves only have an effect on pests and mice. For children/pregnant women/ elderly / pets. This insect repellent is