[Windowcell] Iphone4 4s Hybird Case Lite Purple Tpu Pink Hard Cover Safe and harmless:Ultrasonic waves emitted by the insect repellent only affect pests and rodents. It is harmless to pregnant women, children and pets. Electronic insect repellers have no toxins, no odors, no chemicals, and no radiation. It provides you with 100% security assurance. Safe, Environmental, Economic: Throw away harmful poisons, dangerous chemicals and traps. Our mouse repellent is 100% safe and effective. Nature drives away pests without killing them. There is no need to clean up dead insects and pests. Our ultrasonic insect repellents created an unbearable environment for pests, so they only left. Easy to Operate: Insert the ultrasonic mosquito repellent into any standard outlet. Then the ultrasonic insect repellent emits strong ultrasonic waves to bring the insects out of the house. Large area of effective area: Insect repellent can be used in various places, such as bedrooms, bathrooms, garages, kitchens, offices, warehouses and so on. This is very effective for 1600 square feet. For best results, it is recommended that you install each room. No mosquitoes in the bedroom will affect your sleep Efficient and power-efficient: Just plug in a mosquito repellent and it will work continuously. The mosquito repellent emits high frequencies that humans cannot hear, but it is highly repellent to insects. All pests and rodents will disappear after a few weeks of continuous work. Make sure that there are no obstacles around the insect repellent to prevent the repellent effect.