Bees, Hornets and Wasps
People often mistakenly call all stinging insects "bees".
It is important to
distinguish between these insects because different
methods may be necessary to
control them if they become a nuisance.
Identification
| Wasps have a slender body with a narrow waist, slender,
cylindrical legs, and appear smoothed-skinned and shiny. Yellowjackets,
baldfaced hornets, and paper wasps are the most common types of wasps
encountered by people. |
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| Bees are robust-bodied and very hairy compared with wasps.
Their hind legs are flattened for collecting and transporting pollen. Bees
are important pollinators. |
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Make your
own cheap and effective wasp traps. |
Control of Nests
The first step in wasp or bee control is to correctly identify the insect and
locate its nesting site. An experienced pest control service may provide wasp or
bee control service or you can use the following information to attempt to
control them yourself.
Wasps
The best time of the year to control wasps is in June after the queen has
established her colony and while the colony is still small. But because nests
are small, they are also harder to find. The best time of the day to control
wasp nests is at night, when they are less active.
Exposed wasp nests
Wasp nests that are visible and near human activity can pose a potential problem. If there is
a concern about stings, you should eradicate the nest.
Apply a ready-to-use aerosol "wasp and hornet spray" into the entrance of the
nest during late evening according to label directions. To avoid pesticide
falling down on yourself do not stand directly under the nest and spray up. Plan
your escape route. Be very careful if you must climb a ladder. If live
wasps are still observed the next day, repeat the treatment.
Mechanical control without insecticides is possible for small, exposed nests.
At night, cover the nest with a large, heavy, plastic bag and seal it shut. Cut
the nest from the tree and freeze it. Use caution: there is more risk involved
in this procedure than in spraying the nest.
Ground wasp nests
When yellowjackets are found nesting in the ground, first try
pouring a soap and water solution into the entrance. Many types of soap will
work, including dish and laundry soap. (Do this at night)
If that doesn't work, spray an insecticide into the nest opening. Be sure you
use a product that is registered for use in lawns or soil. After you
are sure all the wasps have been exterminated, cover the nest entrance with
soil. Be conservative with pesticides and read the label.
Concealed wasp nests
The most challenging nests to control are those that are concealed in voids
behind walls or in attics. Often, the only evidence of the nest is wasps flying
back and forth through a crack or hole in the home.
It may be wise to hire someone experienced to exterminate a wasp nest.
Aerosol insecticides usually do not work very well on hidden nests.
Old wasp nests
Old nests are not reused by wasps. Wasp nests found during winter or early
spring are old nests from the previous summer. There are no live wasps in the
nest; they have already left or died inside it. The nest can be safely
removed and disposed of if desired.
Honey bee nests
Honey bees are normally housed in manufactured hives and managed by
beekeepers. In some instances wild colonies of honey bees may nest in hollow
trees or in wall voids. Honey bees may become a nuisance in the spring at bird
feeders and swimming pools as they forage for water. They seldom, if ever, are a
nuisance in summer or early fall.
Wild colonies can be treated with the same insecticides and methods as
described for exposed or concealed wasp nests. Control of honey bee nests can be
challenging. Consider hiring an experienced pest control service if a honey bee
job appears too difficult.
Bumble bee nests
When a bumble bee nest is a nuisance, treat it with the same insecticides and
methods as described for ground-nesting or concealed wasp nests.
Ground-nesting bees
There are other types of bees you may encounter that do not form colonies.
Solitary andrenid bees are common ground-nesting bees. They are also important
pollinators of native plants. They usually nest in sun-exposed, dry areas of
yards. Although there is just one bee per nest, many of these bees typically
nest close to each other. They are usually most conspicuous to the public during
spring. Although many ground-nesting bees may be found flying around their nests
in the spring, they are gentle and very rarely sting people. Sprinkling the area
of their nests with water may be enough to encourage them to move as they avoid
damp areas. Pesticides are not recommended.
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