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In the hot summer, especially in July/August, wasps can be a great nuisance to us. This almost always involves the German wasp (Paravespula germanica F.) or the common wasp (Paravespula vulgaris L).

In a well-developed wasp population, there can be 5000 individuals or more. Wasps can sting when cornered or when their nest is disrupted. Some people are so sensitive to wasp poison that they have to consult a doctor.

Wasps are bright yellow / black and slim. The workers are 10 – 15 mm. in size, whereas the queens are about 20 mm long. A striking characteristic is the so-called wasp waist.

These wasp species belong to the socially living insects. In the spring, the queen makes a nest, usually in the soil or on other shielded places, in sheds, wall cavities, hollow walls, under the roof etc. In the nest, the queen lays her eggs. This results in the larvae and after the pupate phase, the workers emerge.

The workers are female, infertile and provide the cleaning/maintenance/protection of the nest, and care for the larvae and provide food.

The queen remains in the nest to lay eggs. In August / September male wasps are born and subsequently new females, which are fertile (queens). They leave the nest to mate. The male wasps die almost immediately after breeding. The young fertilized females seek a sheltered place for overwintering to found a new colony in the spring.

Around October, all residents of the nest die. The old nest will no longer be inhabited.

Wasps need carbohydrates, sugars from nectar fr instance, honeydew; pulp and the juice of ripe fruits, liquid sweet food and sweets, such as lemonade, syrup etc.

For proteins, they will consume other insects, such as flies, mosquitoes, caterpillars, harvestmen, etc.

Wasps are useful animals, they provide the pollination of flowers and capture a lot of annoying and harmful insects. If the wasps do not pose a risk for people and pets they do not need to be exterminated.

A wasp sting can be painful. A worker will sting when the nest is about to be disrupted, when she is cornered or when you are in her flight path.

Place fly screens in front of open windows and doors;
Close waste bins and containers;
Prevent appealing food
Close holes/cracks in the winter
The wasps will always look for another way out and this may very well be inside your house.

When the wasp nest poses a threat, it can be exterminated by applying so-called wasp powder in the entrances and exits of the nest. This can be the opening of the nest, but also in the exterior wall of a building, such as ventilation openings of the hollow wall or holes near window frames.

The workers come into contact with the powder and take it into the nest through hairs and / or legs. This eventually kills the queen and all others, which will free you of the wasps.

You can do this yourself.
Please keep in mind that wasps are active during the day and can sting you. They will become particularly aggressive when one touches the nest. The best thing to do is to apply the power during dusk or during cool weather. Try not to stand in the flight path.

You can have it done for you.
The professional exterminator of EWS will come to your home and will check what treatment will be most effective. Based on this diagnosis, he will treat the nest. You will be given the guarantee that the nest is treated in a responsible manner and that this treatment works.


EWS Pest control specialises in solving each and every pest problem in a professional and discrete manner. EWS’ service technicians are up to date with the applicable legislation and provide the best result based on the principles of Integrated Pest Management (IPM).

Would you like to speak to an advisor about pest control?

Jan-Willem van der Hoeven

Technical & Commercial Advisor
+31 6 82574349

Contact us for more information about pest control!

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