Review on Enhance Road Safety with Custom Accessories 17380 Deer Alert Whistles by Tony Francis

How do I know if they work? Well, if you've never met a deer, then don't. After a deer strike and two near misses, I received them hoping they would help. Deer are everywhere here in the middle of nowhere, and who wants to be a criminal with that dead carcass on the side of the road? Not me, exactly. In any case, since they were "installed," it's nowhere near. It looks like it will keep the deer away. Fingers crossed! (Had to use a hair dryer on the car to make the whistles stick)