Transmitting ultrasonic via vibration. The mouse repeller is used to affect the acute hearing of underground rodents,with very effective preventive effect. The ultrasonic will deceive them, making them feel endangered,so as to force them away from the vibrating area. Features: Helps drives away mouse ，mosquitoes and other pests Functions 24 hours a day Powered by solar panel Transmits ultrasonic sound every 30 seconds Aluminum spike with sonic transmitter Rechargeable[...]