Wow! That’s a great way to pollute the countryside with noise.
Chris
On 6 Nov 2013, at 17:39, Ken Norton <ken@xxxxxxxxxxx> wrote:
>> Those little plastic gizmos that emit an ultra-sonic whistlr at speed?
>> I've seen deer freeze at the aproach of vehicles with the horns.
>
> Statistically, I don't think it makes a bit of difference. I've run
> with them and without them and there is no significant difference in
> behavior or response. (I've busted them off twice impacting deer).
> There is a lot of antidotal evidence of their functioning, but I think
> the only ones really promoting their success are the companies that
> sell them.
--
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