sublimation oxalic acid (http://www.youtube.com/watch?v=2NoYE2FA6_U#)
Any Italian beekeepers know where we can get some information on the vaporizer he is using in the video?
Maybe you could ask Finski
I know he's not a "tally" but
He likes and uses OA so he may have
something on this type of application
Tommyt
PM sent, just guessing on the Italian comment. Somewhere across the sea for sure though.