This is a  6 Pack/Set Ultrasonic Pest Repeller that comes in black and white device types. This device is a plug-n-use device.  
Each device uses dual ultrasonic and electromagnetic chips to work simultaneously to disorientate the hearing and nervous system of pests to quickly and powerfully drive away from most types of pests like mice, mouses, ants, mosquitoes, spiders, cockroaches, etc.
This ultrasonic Pest Repellent device will send all bugs, rats, insects, cockroaches, mosquitoes packing from your house.

It can be used in every room, just plug one in each room.
We can also use this device in the Office, Warehouse, Barns, outdoor patio, etc.

We supply this device with a 2-year warranty.  Meaning if, it does not work for you, just send it back and we will provide a full refund.

Now, get those rats out of your comfort zone!