The Simply Auto Dual Pack Deer Whistle helps alert wildlife while driving. Using natural airflow, each whistle produces a dual-tone sound designed to warn animals away from the vehicle's path — a practical passive safety accessory for rural routes and open-road journeys.

Suitable for cars, motorcycles and trucks, the twin-pack lets one whistle be mounted on each side of the vehicle for balanced activation. The compact ABS construction uses an adhesive mount for quick fitting, with no batteries or wiring required.