These are the genuine Hopper Stoppers from GWS.

Avoid the possibility of potential injury or vehicle damage by installing animal repeller's. They are easy to install & simply mount to the front grill or bumper area of a vehicle with strong self-adhesive tape. At speeds over 55kph, the device emits ultrasonic sound waves to alert animals of an on-coming vehicle. They do not require any form of power to operate and feature a unique fitting system that allows them to be quickly removed. 

• Suitable for most cars, trucks and bikes and come in a retail blister pack hang card.