Randy:
> I do not know the answer to the vaporization question, but will soon be.


It will interesting to hear what you find. I've used OAV in every season and in some instances in multiple applications at intervals of 5 or 6 days without experiencing any ill effects.  I'm switching to a Pro Vap this year which seems to put out a little more vapor, so I'll look more closely at the brood. 

Medhat:

>There is no impacts on colonies brood build up or bee population. In fact it is less harsh on bees due to even distribution of bees inside the hive. Vapour will settle on bees evenly.

In addition to settling on the bees evenly, I would add that all hive surfaces get some fallout, which, I speculate, may even prolong the efficacy as the acid particles dissipate over time.  



Bill Hesbach
Cheshire  CT 

             ***********************************************
The BEE-L mailing list is powered by L-Soft's renowned
LISTSERV(R) list management software.  For more information, go to:
http://www.lsoft.com/LISTSERV-powered.html