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If the actual nest space for wasps, for example in a roller shutter or a power distribution box, has become too narrow, then it is quite possible that they will eat into the masonry behind it and thus enlarge their nest. Even if there is a small hole in the plaster in a house wall, this can definitely be the entrance to a wasp nest in the wall. The following article explains how to deal with such a wasp nest in the house wall.

wasp nest

When is the wasp nest dangerous?

If there is a wasp nest in a house wall, it should be removed, especially if there are allergy sufferers or small children in the family. Because with such an internal nest there is always the danger that the animals will also get into the inner space bite through and then possibly populate a room or the entire apartment. The common wasp in particular needs a lot of space to build its nest, which it creates by penetrating walls. So the following places chosen by the insects are dangerous for the occupants of a house.

  • in the only entrance area of the house
  • on a terrace or balcony
  • in the shutter box
  • at the window of a child's room

Whenever the approach lane of the wasps to their nest crosses a route taken by the residents of the house, complications can arise with the animals. Fighting the insects could then become a danger for us humans, because they feel disturbed, want to defend their nest and could react aggressively.

Any damage

Wasp nests, which are located directly in the wall, can cause serious damage in addition to the danger for allergy sufferers. Because the animals hollow one for their nest, for example wall insulation downright off. If there is insulation between the wall and the plaster, then this is at risk from a wasp nest. Even rigid foam can easily be broken through by animals that have a high level of gnawing activity. Therefore, if you find a nest in a house wall, you should proceed as follows.

  • wait until the wasp colony has died in autumn
  • knock off the spot in the plaster
  • remove the entire nest
  • Assess and repair damage
  • re-insulate the spot
  • plaster
  • delete if necessary
  • seal all holes well

Of course it is annoying when a wasp nest causes so much damage, but this is usually not the rule. Because normally the animals look for existing cavities in order to build their nest protected here.

House facade with damage to the plaster


Close from the outside

Even if the tip is often circulated on the Internet, it is dangerous to close a hole in the wall, which wasps use to slip through, in summer. Because if they can't find a way out, they use their sharp mouth toolto find another way. This could then definitely end up in a living room. Since the animals could also react aggressively in this way, they should not be blocked from slipping through in summer. If the nest is then deserted in autumn, the hole can be closed as follows.

  • Put construction foam in the hole
  • seal with silicone
  • plaster over

So next year there is no longer any danger that a wasp queen will find the hole and thus the finished nest and resettle with a new colony for the next summer.


Do not fight wasps yourself

Actually, wasps are through this Conservation Act protected. However, if they cause more harm to the residents of the house than they can live side by side, then a nest may also be removed and the wasps fought if a beekeeper cannot resettle them. In the following cases, a permit can be requested from the Animal Control Authority.

  • Allergy sufferers live in the house
  • Nest is built at a house entrance
  • Residents have no way of getting into the house
  • Nest sits near a child's room
  • Animals could enter the apartment from the wall
  • Terrace or balcony cannot be used
wasp nest from the inside

Especially if the nest was built in a wall, one should professional be consulted if this is to be removed in the summer. Because for the layman it can be dangerous to fight the animals in a nest, the size of which is not foreseeable, especially in a house wall. The craftsman has certain chemical agents that he can spray into the entrance hole that will destroy all the animals in the nest.

detect nest

Especially when a wasp nest in a Wall was built, it is often difficult to see from the outside. Suddenly there are wasps, maybe more in a room, and it is not clear where they are coming from, since the windows and doors are actually always locked.

The following hints can help to find the nest:

  • scraping and humming noises in the walls
  • with a large nest very high volume
  • small holes in the plaster
  • little nest on the wall
  • there is usually a big one behind it
  • in the roof in the insulation
  • brisk activity of animals in a certain place

Wait for the winter

If a nest is not in the immediate vicinity of a window, a balcony door or another place where it is relatively unobtrusive and the occupants of the house do not have to constantly walk through the insect path, then autumn/winter can be awaited. to fight the animals. Then wasp colonies die off in late summer to early fall and the nests are then deserted. The queens that have just hatched for next year look for another sheltered place to overwinter. Only next spring do they set out again to find a new place for a new colony. However, old, finished nests are also preferred.

Therefore, these should be removed in the fall as follows:

  • observe the approach path in summer
  • look for the wasp nest in the wall of the house in autumn
  • possibly knock off plaster
  • remove the nest altogether
  • also examine roller shutter boxes and the wall behind them
shutter boxes


preventive measures

Preventive measures against wasp nests in summer should already be taken in autumn/winter. Since the queens are looking for their nest building in the spring loopholes are where they can build their wasp colony protected, they should be deprived of this opportunity. Therefore, the preventive measures should be taken as follows.

  • thoroughly inspect all the walls in the house
  • if there are small holes in the plaster, close them
  • also seal holes to the roof
  • as far as possible, seal the roller shutter boxes
  • Observe the wasp queen and fight it directly

Of course, for this preventive measures takes a little time, but it is sensibly invested so that wasps can no longer get lost in the house wall. Visible nest building can already be prevented in the spring by removing the nest immediately at the beginning. An invisible nest in the wall, on the other hand, can grow to a large population of up to a thousand animals over the summer if it goes undetected at first.

Wasp colony on a nest


protect yourself

If a wasp nest cannot be removed in summer and has to be lived with the animals, then some measures should be taken to ensure that the wasps do not react aggressively.

These include the following:

  • do not wear perfume or hairspray
  • also avoid strongly scented cleaning agents
  • Have a spray bottle with water ready at the table
  • hereby scare away the animals
  • do not walk through the approach lanes

Are a lot of wasps on the terrace or the balcony on the go, then it is better to avoid eating outdoors over the summer. Since the animals no longer fly after dusk, the outdoor dinner can also be postponed until later on warm days.

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