:) I recently moved into a new house, and am being attacked by carpenter
:) bees whenever I would walk around the garden, which basically
:) circumscribes my house. They drop down and around my head and
:) basically try to chase me away.
The ones bombarding you are the males, they have no stinger so are harmless.
Messing with mama bee at her nest may be a different story. (she can sting
but rarely hear of a sting from carpenter bees).
:) I've noticed several dozen holes
:) drilled into my eaves, and I did a little Internet research. What
:) prompted me to action was the following image, showing a little 1/2"
:) hole and then a BIG LONG TUNNEL that they bore:
:) Apparently the tunnels average about a foot in length per bee, but can
:) become six to ten feet long if there are multiple bees sharing the
:) same tunnel. Replacing all the wood around my house isn't something
:) that I want to pay to fix in ten years, and I'm allergic to bees, so
:) I've concluded that they all must die.
The nesting sites on the house should be addressed, but no real need to kill
everyone that might fly past you. They are a valuable pollinator in nature
and I have only come across them stinging at one house where they nested in a
wooden swing set and with the kids swinging, stirred some up and a couple of
kids were stung.
:) I've surmised that the best way to control them is as follows:
:) 1) Map out their holes during the day
:) 2) In the evening, clamber up a ladder and spray Drione Dust
:) ("harmless" dust that doubles as pet flea powder, which apparently is
:) just silica gel that dehydrates the larva and causes them to die) into
:) each hole
drione is very effective but the real benefit is the 1% powdered pyrethrin
that kills mama bee. The larvae probably will be secure in the developing
chamber and won't get into the dust until after they pupate, in which once
again the pyrethrin will probably bee (get it? :) ) what does them in.
:) 3) Leave the treated holes opened for some time, so the bee has a
:) chance to drag the dust down into the chamber, otherwise I'm just
:) wasting my time
I have never put anymore thought into the holes after I treated them no
matter what I may have used and have always had success whether it be a dust
:) 4) Caulk the holes shut some time later
:) I'm curious what time of year is the best time to treat the holes, and
:) how long I should wait until I caulk them shut. Please respond to the
:) newsgroup, not my email.
I would treat the holes now for they will only continue to enlarge the
tunnels. I would think you can tell if they are still active after a couple
of days. I haven't tried it but supposedly dipping a cotton ball in finger
nail polish remover then plugging the holes up at night with the cotton ball
works well at killing them. They usually attack unpainted wood, so maybe
keeping the trim painted or stained may help keep them from future attacks.
It is said that the early bird gets the worm,
but it is the second mouse that gets the cheese.
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