The Nekid Cow Brand 2pk. Deer Warning ALERT Whistle For Cars Vehicle Self Adhesive Animal Whistles ALERTS GUARANTEED - PLUS Small Mini Plastic 4pk Stick On Reflectors Red Amber for Auto, Bikes, Cars PREMIER Wind Activated Deer Whistles - Self Adhesive & EASY to install. EVERYONE needs these! Buy for everyone who owns a car, Motorcycle, Truck, ATV. These Deer Alerts warn Deetr and other animals up to 1/2 mile away of your approaching vehicle. Provides safety for you and your passengers. Easy to install: just peel and stick. Fits ALL trucks, motorcycles, cars and vans. Wildlife Warning Device emits ultrasonic waves inaudible to humans. Wind activated: begins working at 35MHP. SAFETY IS A MUST. The Deer and wildlife population is out of control...Now you can greatly reduce the risk of animal / auto collisions! [COMBO PACK} Includes 4pack Small 2" Mini Plastic reflectors (2 Red, 2 Amber). Use on cars, bikes, trucks, ATV's, Vans and motorcycles Satisfaction Assured- SEE BELOW for Better than 100% Guarantee