I thought those were a joke. I used to have a set on a car years ago and still had many dearly close misses. Ha!
If I'm not mistaken, my neck of the woods (Fairfield County CT) has one of the highest deer populations per square mile in the nation. During rutting season you would be hard pressed to not see one jump out in front of you at some point. We even have a family of them sleeping in our back yard most of the year and I have personally walked up to one as close as 20 feet before it decided to bolt. They are a true terror on the Merritt turnpike.
I guess this is what happens when you take up all of their land with homes and remove their natural predators.
Any way, are deer whistles actually any good?
Sorry for the hijack here folks.