Rod,
I started with cardboard. It does gunk up the interior of the smoker so there
are things in it that may not be too good for the bees. I shifted to pine
needles when I noticed that it was the fuel that continually won our State
Picnic smoker contest. I won the next year with pine needles. Interesting, but
the only other fuel that won was from a nuclear power plant. He would not tell
us what it was.
Cardboard burns hot compared to pine needles. Plus I heard the same things
about glues and other treatments causing problems so it was not too hard to
shift- even though I saw no problems with my bees.
Bill Truesdell
Bath, ME
 
Rod Billett wrote:
 
> Recently, during a conversation, it was mentioned that many producers are
> treating the cardboard with chemicals (Glue for bonding, Water resistance,
> reduce deterioration, etc).
>
> My question, Has anyone seen detrimental consequences in relation to using
> cardboard as smoker fuel?