Wasp nest under roof

[SixK]

Maybe 2 nests ... or more;)

Official sweeping goes back a year, I did one at the start of the year myself, but obviously, not during the summer.

Of course, I will not bring the chimney sweep right away;)

I would probably contact the fire department for the chimney, but unfortunately it will be chargeable.
If he can make me the nest under the roof for the same price ...

SixK

[Obamot]

In my corner, it pays:

- if you call them for nothing.
- if it is not an emergency.

A wasp's nest is considered an emergency, insofar as a simple bite can be lethal in some people ... And we can not say that you have not done "diligence" if you have been swept ...

It costs nothing to inquire!

[SixK]

I did not take the time to give you a return, but false alarm.
A priori, no wasp nest in my fireplace.
I had not turned off my VMC before lighting my fireplace, so the draft was not as good.
And the wasps that were in the chimney, well probably, they had found refuge in the conduit for the night?

Sunday morning I exterminated (finished) the 2 wasps left in the chimney by spraying them with vinegar (not as effective as what I had been told) and a good blow of tatane!

Then not knowing if the pipe was blocked, I started by making myself an oil lamp to initiate an upward movement of air in the chimney.
Garment dust collected in the dryer filter and rolled up in a wick.
A glass jar (yoghurt / cream).
And 1cm of oil.

I lit, it made me a little smokeless flame that I let burn for 15 minutes. Then I started by burning a few twigs to make some smoke.
No stagnation.
I ended up lighting the fire and normal operation!

Finally voila, I'm reassured, we can bring the chimney sweep!

SixK

[SixK]

More activity around the nest for 2 or 3 weeks, I think I will be able to close the passage and leave only one passage so that the queen and the males can escape without wanting to come back ...

SixK

[Obamot]

If that's what you want to do (leave them alive, when there are already colonies scattered in different places not far, as I understand ...) you will still have to think about putting a non-repellent Lethal ... For some insects, 20 or 30 tablets of sodium hypochlorite in a non-hermetically sealed box (the kind used to disinfect water in inflatable pools), they don't like it too much (moths either. .). And once they are gone, we will have to remove these pellets, because it can attack our lungs ...! (Do not joke too much with active chlorine ...)

Attention, put in a safe place afterwards, it is very, very reactive, so do not mix with anything, under penalty of effects which can be violent and rapid.

[SixK]

Okay, I don't understand.
2 wasps in the house in less than 15 days !!! ???

Common wasp, adult model.

I did not take the time to look at whether it was male or female.

The outside temperature has not exceeded 10 ° C in recent days! (at best we had 6 ° C I think and negative temperatures at night)

In short, where do they come from?

Firewood ? I sometimes take in logs that have been attacked by insects. (sawdust on wood)
Lemon pot in winter in the garage?
Or is it my nest that is already waking up? (however it is not the season)

SixK

[highfly-addict]

Your nest does not wake up: it is dead.

They are queens, probably dislodged from firewood by the increase in temperature.

http://fr.wikipedia.org/wiki/Vespidae#La_colonie

[Obamot]

You also have to listen carefully ...

Because if they are making a nest elsewhere, there is activity and their roaring of wings does not go unnoticed, believe me ... :-)

They make one cavity after another and it starts with a very small trick, I saw nests made up of barely 3 cavities and which can receive larvae ... This is how they start. I discovered this twice in my house. Once in the kitchen and another in the living room, five or six cavities ... They profit that there is nobody, enter by the window and settle down! They are not afraid of anything! And sometimes even when you are there ...!

Mebon, what's weird is that I don't think they do that in winter ...!

[perplex]

For the moment I intend to weaken the colony by trapping the workers. (plastic bottle + water + sugar + alcohol)

The urine in a plastic bottle added with a little sugar is not bad either, they are attracted, enter the bottle, then are asleep by the ammonia fumes and can no longer fly out ( advantage, it does not evaporate as quickly as alcohol).

Otherwise, letting a nest thrive can grow up to several tens of kilos (depending on the type of wasp), and you are not immune to a sudden attack by a wasp that would have bitten the fly. !

At home I wait for the end of the season, then winter, and the following year I dissuade them from staying with a smoke bomb as soon as I see a little "activity" in the nest, in general they leave elsewhere (they really don't like it), then I sprinkle the old nest with a repellent that could kill the most daring to come back ... And I don't see them again, even though I didn't have to kill the whole colony! (This is the period when they will soon start to be more discreet, unless there is an Indian summer, we will have to wait a bit ... We can do it at the end of the season, but that makes them more nervous sometimes, you might as well do it after they have spent the winter, they are weakened and a little lazy to still have to fight ...)

Hello everyone, little up on this thread, I'm pretty much in the same situation, they settled in the back of the garden in a mole hole at the start the observation was nice ... in the same place two magnificent walnut trees give all they can at the moment and it's a bit of a pain, but hey there is more serious ....

I would like to be sure which will go well this winter, today I find them very fit, about 8 entries for as many starting per second ....
A ++

[Obamot]

Hi Perplex,

Some leave where no does not matter since they will all be dead (they do not survive the winter) and the queen will be gone.

If it is hardly accessible from the outside there are 2 methods:

1) radical: It is enough to squirt, by the entry orifice of the old nest with the polyurethane insulating bomb by sliding the nozzle as far as possible inside (harmless because in winter all wasps die, except the queen who is already leaving to establish a colony elsewhere ... In your case since it is a mole hole just dig it up (see below.) And do that during the winter frost. there are always points of thermal insulation to revise, you can take the opportunity to detect them and use the rest of the bottle because once the process started, it does not keep you must use everything as soon as possible)

2) soft: a trick to test would be to regularly sprinkle / spray the old nest with concentrated vinegar, the "papier-mâché" cells of the nest, if some try to establish themselves there, their chitin will be altered, they will have enormous difficulty in breathing through their breastplates and moreover their pheromones should be denatured or masked for the moment without knowing where it comes from (which makes it almost certain that these Girl Scouts never manage to reach their colony of origin, they will be completely confused, as drunk and if so they will not be able to come back)!

But in any case I would condemn the entry of the nest, or better, would take advantage of a very rainy period to dig it up in winter (there can be no one in it, but it is really necessary to do it during winter therefore wait still a little).

RTDC.