Bill;
I say 12 hours on the formic boards but I think it is more like 4 hours
before the fumes disperse. They call them 'flash boards' for a reason as
the formic leaves the boards quickly. I think I could use the boards twice
in 1 day, morning and evening if I wanted. Just my field observation after
4 years of use.
Peter, barn roofs, eh? I was worried about the barn roof too so I
reinforced the rafters and put cross braces inside the barn. Then I saw 2
feet of snow on the roof for several winters and realized it was heavier
than the bees and honey so I must be a good 'jack-leg' structural engineer
or just lucky.
And Aaron, thanks for correcting my url to the barn roof photo - my first
try linking a photo with that program.
Bill Lord
beekeepingconsultingfordevelopment.com
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