>>I would second Charlie's warning.  In NC if you 'spray for pay' you need a
commercial pesticide license.  Since you want to apply a chemical to a
structure you would also need a structural pest control license.

Well, even if you had a commercial pesticide 
applicator license, IMO, you would be using 
the product in a manner not recommended 
on the label.  

>>Experience has shown that most violations are reported by neighbors or
competitors, and a homeowner with Bee Go in the wall might not be too happy
if the smell permeated the wall.

For use in a structure, as a fumigant, 
you would need to use a device which 
would enter the fumes and leave product 
residue outside the void.  I use a home 
made device which pumps vapor into
the void which allows fumes to dissipate
in a short time after use.  

J Waggle
Feralbeeproject.com

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