Hayward Spangler did a series of tests on this at the Tucson Bee Lab in 
the 1980s, bolting a siren to a top cover.
He probably did not publish it, but you could contact the lab for a 
quick check.
As I remember, it had no effect, other than making us all feel sorry for 
his technician.
    - (glad I missed that one)
          - John

On 6/1/2011 6:56 AM, Larry Krengel wrote:
> I am doing battle with bears. 
> I have now placed a battery-powered sonic alarm by my bees.....
>   Will the siren be a problem for the bees?

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