I have a serious problem with Carpenter Bees. When is the best time to apply the dust in the their holes? I have a number of holes to do this to and if it will stop them from boring holes out of my home in the spring, I want to do it now. Note there are areas I have already filled with a wood-accepting bondo product. Over these areas I have applied a three-coat oil-based paint over them. Let me know (1) when is the best time to apply the dust (noting its fall now in New England. (2) will they bore out of holes I have already plugged?
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