Electronic Mosquito Repellent Mouse Environmental Mosquito: Features: 1. Install the power socket on the wall 20--80 cm from the ground (the power supply left by the home decoration is almost this height), and keep it perpendicular to the ground (remember that the product can not be placed on the ground). If there is no power supply of this height, an external power strip is required to keep the product at this height and perpendicular to the ground. 2. There should be no tall obstacles within 1 meter of the front of the product (ie, it should not be installed on the back of objects such as refrigerators, wardrobes, sofas, etc.). 3.he product orientation should choose a more open indoor space, but can not choose long-open open doors and (waves are straight-line propagation, so it will spread the outdoor, attenuate indoor wave field strength, reduce the efficiency of driving rats) 4.the product should try to avoid the cloth items such as curtains, fabric sofas (the cloth items are sensitive to waves) 5.the product should first be installed in serious area of ​​rats, when the area is eliminated, the product will be installed in the center of the whole house (such as the living room) or the mouse is accessible place. 6.the product should be working 24 hours a day during use. In addition, the doors and should be closed at night, and the mice will be sneaked away during the day when the window is opened during the day. Product Description: Features: frequency 120-150sq m of protection, for 50sq m Frequency ranges: 20-55khz Power source: AC110V-220V 50-60Hz Power:Less than 5w Main function: 1.Repels mice. 2.Repels mosquitoe 3.Repels cockroaches. Packing List: 1 x pest BEST ULTRASONIC PEST REPELLER OF THE YEAR, Quiet and Effective Pest Repellent We recommend using an ultrasonic pest repeller, a device that emits high-frequency noises that are inaudible to humans. These sound waves are designed to distract, annoy and deter common household pests such as cockroaches, spiders, mosquitoes, ants and rodents. The intelligent multi-frequency ultrasonic conversion system leaves pests with no place to hide. Many people naturally worry about the safety of their pets when using insect repellent devices. Studies have found that while cats and dogs can hear waves, humans and domestic pets cannot hear ultrasonic waves. Non-toxic, odorless, and chemical free, it is very safe and harmless for children, pregnant women, and pets. How to Use Ultrasonic Pest Repeller at Home? The bug repeller is simple to use. All you need to do is plug the ultrasonic pest repeller into an electrical outlet and when the blue night light comes on, it will begin to repel pests. The repeller should be placed in a location where its noise will not be affected by walls and furniture. It is recommended to install this repeller 20-40 inches from the floor for flying pests and 10-30 inches from the ground for crawling pests.