Honey Bees and Yellow Jackets nesting inside walls are best treated
with Drione Dust or
Delta Dust, squeezing the dust inside the entry points inside the building when
there is little or no sunlight. To eliminate stinging insects
nesting in ground nests or inside walls, hollow blocks or other
parts of a building,
To spray small Paper Wasp or hornet nests use a solution of Cypermethrin insecticide at
dusk or before the sun rises in the morning. Thoroughly wet down the nest while all the
wasps are sitting on the nest.
To treat Yellow Jackets or Bumble Bees nesting in the
ground use a solution of Cypermethrin
insecticide mixed in a bucket. Apply 2-4 gallons of Sniper solution in each nest,
depending on the size, before sunrise while all the Yellow Jackets or Bumble Bees are
Kill indoor flying, stinging pests with Pyrethrin
Aerosol, using natural pyrethrin material. Visible
nests under eaves can be eliminated with Wasp
The Bald faced hornet (Dolichovespula maculata) is sometimes called the white-faced
hornet, but is actually a yellowjacket. It's easy to spot since it's our only black and
white yellow jacket. Its nest is a gray "paper" envelope with several layers of
combs inside. A mature nest is bigger than a basketball, but pear-shaped, with the larger
end at the top and an entrance hole near the bottom.
A single, over-wintering queen begins building the nest in the spring. She lays eggs
and tends the first batch of larvae that develop into workers. These workers tend new
larvae and expand the nest throughout the summer. A mature colony can have several hundred
workers by the end of the summer. In fall, workers die and next year's queens find
Baldfaced hornets are beneficial, capturing insects (often including other
yellowjackets) to feed to their larvae. Though larger than other yellowjackets, Baldfaced
hornets are generally more docile. But they can become aggressive and will sting when
their nest is disturbed or threatened.
A Baldfaced nest is usually constructed high in a tree. In these cases the nest is best
left alone. In fact, Bald Faced hornet nests are often first noticed in fall when leaves
drop, exposing the nest. By this time the hornets are dead or dying, and the nest will not
Occasionally you will find a Baldfaced nest built on the side of a building, in low
shrubbery, or even in an attic or shed. Nests in these sited will probably need to be
Baldfaced Hornet Elimination
Treat the hornet nest as late in the evening as possible. Remember that all wasps,
hornets and bees are at rest when it is dark. Not only will all the hornets be in the nest
for you to exterminate (instead of foraging for food some distance away) , you will be at
far less risk when they are resting. No one wants to treat a hornets' nest with hornets
dive-bombing their head!
When approaching the nest, move slowly so as not to disturb the sleeping pests. If
eliminating the nest in late evening is not possible (forcing you to work in broad
daylight), avoid crossing the obvious flight path. You also do not want to cast a shadow
across the nest while you work.
For initial "knockdown" or quick kill, use a professional wasp freeze aerosol.
This will enable you to attack the nest from a distance or reach higher areas without the
use of a ladder. The wasp freeze should first be directed at the entrance of the nest to
eliminate any guard wasps. Next, thoroughly soak the remainder of the nest. For the
average size nest (or larger) you will need two cans of wasp freeze. These types of
aerosol are not very expensive and you do not want to run out of product in the middle of
You can now finish the hornet elimination. This is best done using Drione Dust or Delta
Dust. Either one of these products will do an excellent job, and they also are
packaged in a container that allows you to apply the dust directly. Ease the tip of your
dust container (or Crusader Duster, if
you prefer) into the entrance and quickly squeeze three or four times. This will send the
pesticide dust far into the galleries, where it will remain long enough to kill all
After 24 to 48 hours, all hornets should be dead. (If not, you simply repeat the
dust application). You can now safely remove the empty nest.
To save money, order our Wasp & Hornet Kit. This kit contains a
Crusader Duster, a 1 pound container of Delta Dust and 2 cans of Wasp Freeze.
Wasp & Hornet Kit costs $59.00, plus shipping.
Wasp & Hornet Kit Ordering
Cypermethrin 4 ounce is $19.50; makes 4 gallons of spray.
Ordering information for 4 ounce
Pest Control Supplies, Household