Pestbye® Ultra 400 Ultrasonic Mouse & Insect Control Plug in Pest Repeller 400sq ft Room - All in 1 Mice, Rodents, Spiders, Rats & Crawling Insects - Single Unit

Product description

• How does it work?: The Ultra 400 emits out a powerful, continuously varying, high frequency ultrasound - for rats and mice who can hear at frequencies much higher than humans, it's like a smoke alarm going off continuously. - insects and other crawlers are thought to be similarly affected by the high frequencies.
• Easy to set up: Just plug in one Ultra 400 device for each room where you might have a problem - one device will cover 400 sq ft (that's about 4 times the size of a standard double bedroom)
• Continual frequency changes: Continually sweeping frequency changes reduce the changes of device-adaptation
• Safe & Nontoxic: Safe for humans, babies, cats and dogs
• Will not affect computers, burglar alarms or other electrical equipment