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If you find a beehive

Last Updated January 22, 2024

Mizuki and Manabu "Housing Hygiene ~ Bee ~" (Play time: 5 minutes 47 seconds)

The video summarizes the "how to distinguish", "danger", "extermination method", etc. of hornets and paper wasps.
Please take advantage of it.

Extermination of beehives

Health and Welfare Center doesn't get rid of it.
In addition, since hornets are highly aggressive, it is recommended that you ask a professional when removing nests.
Please check the extermination company by yourself on the Internet etc. However, if you do not know the extermination company yourself and wish to provide guidance, we will guide you to the following association as an example.
The extermination fee will be borne by you, so please check carefully before requesting, such as taking an estimate in advance.

Oh An example <Kanagawa Pest Control Association>
It is a public interest incorporated association made up of specialized companies that control harmful rats and insects.
Phone number: 0120-064-643 (limited to landline telephones in Kanagawa Prefecture), 045-681-8585
Fax: 045-681-9502
Reception hours: Weekdays (Mon-Fri) 9: 00-17: 00, Saturday (1st and 3rd) 9: 00-12: 00
Homepage: https://kanagawa-pco.or.jp (external site)

What is a bee that stabs a person?

As a stab bee, only a few types, such as hornets and wasps, must be careful.
These bee societies consist of queen bees, male bees, and working bees, and attack external enemies to protect their nests.
Other bees have needles, but will not stabb unless they are grabbed with bare hands.
With the development of residential land in forests, bees often build nests in familiar places.
It is important to know the behavior of bees so that they do not suffer damage.

About beehive

Nests are built in various places, such as under the eaves, tree branches, attic, door pockets, and soil.
Bees attack if they carelessly approach the nest, touch the nest, or give vibration.
When pruning trees, make sure that there are no beehives.
If you are attacked, lower your posture and leave it as soon as possible.
When hiking, don't go on anything other than mountain trails.
Also, wear a hat in dark clothing, as black objects are more susceptible to attack.
When it gets cold, it stops working and disappears in winter.
Beehives are only one year and do not use the same nest in the following year.

About the hornet

The shape of the nest from April to July

The hornet's nest from April to July is about 7 cm in diameter and looks like a tokri or a single vase over the size of the nest.
The queen bee is nesting and spawning.
When the size of the nest is about 10 cm in diameter, the first working bee begins to emerge. By that time, the shape of the nest was round like a baseball ball.

The shape of the nest from August to November

It is a round nest with a diameter of 20 to 30 cm and a marble pattern.
A hornet's nest

The hornet's nest from August to November is about 20 to 30 cm in diameter (sometimes larger) and is round spherical like a ball. The surface has a pattern like a marble pattern.
There is only one entrance to the bee.

About paper wasp

1.If you want to get rid of it yourself

There are many bees on the surface of the nest, and the shape is like turning the bowl upside down. When viewed from below, the burrow is strong.
Wasp nest

There is no outer cover, and you can see many hexagonal holes from below.
The aggression is less aggressive than the hornet, and there is no danger unless it stimulates the nest.
Like the hornet, the nest is thrown away only for one year.

1.Preparation

Check the position of the nest.
I'll clean up something that would disturb the work.

2.insecticide's preparation

Prepare a spray insecticide for bees only or for flies and mosquitoes.

3.Check clothes during work

Let's wear a hat with long sleeves and long pants.
Prepare gloves and boots and wrap a towel around your neck.
Avoid black-colored clothes and hats.

4.Extermination work

It takes place from evening to night.
Make sure there is no traffic.
Investigate the wind direction, approach the nest from the wind, and spray the insecticide for a few seconds.
If you inject from just below the nest, bees will fall, so do not enter directly below.
When using a flashlight, do not shed light on the nest.

5.Clean-up

Make sure there are no bees in the nest.
Don't touch the fallen bee with bare hands.
※If it is difficult to use insecticide, such as nests under eaves or in overgrown trees, we can lend you special equipment (pole-shaped injection equipment).

You can consult about bees online.

If you are unable to determine whether hornets or paper wasps yourself, you can also consult "[Kohoku Ward Limited] Consultation on Beehives" (outside site). We will determine the type of bee from the photos of the beehive posted and answer how to deal with it.
Please note that it may not be possible to judge depending on the condition of the image. If you cannot judge, we will reply to you to shoot again or call directly.

Notes

Illustration of beehive consultation
Image of beehive consultation

  • Consultation is limited to beehives formed in Kohoku Ward. Otherwise, we will not reply.
  • Take a picture of the nest as clear as possible from a distance that does not stimulate the bee. However, if you feel uneasy about shooting, please do not overdo it and contact us by phone.
  • Please note that it may be difficult to respond during the day from consultation. In particular, applications at the time of closure will take a few days to respond.
  • There is no direct extermination in Health and Welfare Center.

About bees

I often don't settle down, so let's take a look for a while.
Bee sealing

Nests are divided in spring, and at this time they gather on tree branches in groups, but they are not nesting.
This is called bunpo.
The sealing is not a bee nest, but a mass of bees.
The bees are looking for a place to become a new nest.
Normally, bee nests are built in closed spaces such as tree cavities and between walls.
Bees that are being sealed are hardly aggressive like attacking humans and move in a few hours or days, so watch them for a while.

If stabbed

If a bee bites, quickly suck out the poison and cool it.

  • I've been sick by a bee before.
  • I have palpitations.
  • I feel sick.
  • Some places were stabbed.

In such cases, please go to the hospital immediately.
Ammonia doesn't work.

Inquiries to this page

Kohoku Ward Health and Welfare Center Health Sanitation Division

Telephone: 045-540-2373

Telephone: 045-540-2373

Fax: 045-540-2342

Email address: ko-eisei@city.yokohama.jp

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Page ID: 573-837-416

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