Pest Repeller Electronic Repellent Reject Mice, Rat Bug

* Have effect in 20-50 square meters in the room. * Can lustrate house mouse, black beetle, mosquito etc. * Do not harm to human being and pets. * Not have affect on house machine. * No-toxic, safety and environment protected. * Low energy consumption. Notes: 1. This machine should be installed at 80-120 centimeter away from the floor, and vertical to the floor and plug to the power socket. 2. The installing point should be avoided from carpet, curtain etc attaching sound material. Otherwise, the decrease of the sound pressure will do harm on the effect. 3. It’s normal that the mouse and vermin will increase at the beginning of the using days. Because they are moving away from their living place after the attack of ultrasonic. 4. To increase the effect, you should use several sets of this machine at the warehouse or goods