Ultrasonic Pest Repeller - Electronic Pest Control Repel Mice,cockroach,fly,mosquito,ants,spiders,bed Bugs,rodent - Indoor Home Insect Control Repellent Roaches Equipment - Pink & White (White) Advanced ULTRASONIC Pest Repeller, Electronic Magnetic and Infrared Technology. Helps to repel pests , mice, etc. CHEMEICAL-FREE and ODOR-FREE. Inaudible and harmless to human beings and pets while working. POWER-SAVING and Made of Quality material with BUTTERFLY-SHAPED radiating holes on the top. USER-FRIENDLY with an easy plugging into the wall. Wont interference with other domestic appliances IDEAR FOR homes, warehouses, offices, stores, hotels, etc. Effective in a room of about 50-80 sq.m.