Safety and economy: This ultrasonic insect repellent is safe for humans and pets. There are no poisons, chemicals, tricks and murders. It is a physical method to eliminate insects, non-toxic and environmentally friendly. The insect repellent is 100% safe and harmless to humans, children and pets.Latest ultrasound technology: This indoor mosquito repellent killer emits enhanced low frequency waves, which can repel insects, mice, mice, mosquitoes, ants, spiders, cockroaches and other insects. Effectively interfere with insect brain waves and keep insects away from your home.Wide Effective Coverage: Equipped with ultrasonic insect repellent microchip system, suitable for an area of 80-120 square meters. It is widely used in homes, warehouses, offices, gardens, hotels, etc. For areas with severe mosquitoes, it is recommended to install 2 or more devices in other rooms.Easy to use: It should be installed vertically 30-80 cm from the floor and there are no obstacles such as curtains or cabinets in front of the mosquito repellent. Then simply plug the electronic insect killer into the wall outlet without any installation tools.Satisfactory after-sales service: If you have any questions about our products, you can contact us by email at any time. We will respond to you within 24 hours. We offer free return and exchange for products with quality problems (except for man-made damage).