Judy Spradley wrote:
>
> Which brings me to the question, has anyone considered the impact of old
> brood comb on proliferation of tracheal mites?
 
        The tracheal mite infests fully devoped bees after they have
hatched. The age of the comb has no influance.
 
 
> Our climate is not hot enough to effectively use menthol.     We have succesfully used menthol for years here in Western New
York. I'm pretty sure you can use it in PA, however I would recomend
controlling T-mites by using queens produced with the Ontario
selection program. We will have some for sale again this year and there
are several producers in Ontario.