100% safe Forget the poisons and harmful chemicals. Crazo pest repeller is the most effective and environmentally friendly way to drive pests away. It switches the frequency of ultrasonic wave intelligently to disturb the normal life of rats and cockroaches and deteriorates their living environment/makes their living environment uncomfortable. Double speakers, double power Crazo pest repeller features a dual-speaker design with simultaneous ultrasonic wave, which covers wider area and has more power for the maximum rodent repelling. 0 noise The frequency of ultrasonic wave from pest repeller is different from those human can hear, and henceforth is inaudible to human. Using Tips: 1. The device should be installed at least 80-120cm above the ground and be plugged into the electric outlet vertically to the floor. 2. Do not let the night light open during use. Turn it on only when necessary. 3. It may take up 7-10 days to see the effect. If you have any questions, please consult the seller.
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