Wasps - how long once nest access shut off

Ant555

I noticed a few wasps inside a room of my house one day - 12 year old got stung!
Then noticed that there were lots of them buzzing around outside and crawling up between the plastic bit of cladding and the wall - 1st floor extension/garage.
I subsequently sprayed some wasp nest killer stuff up between the cladding and the wall and sealed all the gaps with frame sealant.

The thing is that 6 days on there are still wasps buzzing outside (maybe 2 or 3 at any one time) and it looks like they are trying to get in. They fly about a bit, walk around the wall, have a sniff, try a couple of crevices and then seem to fly off. I have observed them quite a bit and they don't appear to be going inside anywhere.

So, my question is - how long should I expect them to still be buzzing around? I guess they can still smell or sense the 'nest' but I am worried now about how persistent they are that they will find another way into the roof space which is rather inaccessible to me without pulling down a plasterboard ceiling.

Thanks

Biggles

Wasp nest killer needs spraying into the nest itself to be effective.

If it's just been blocked off, they could well be flying around for ages. They'll give up eventually.

Mr_Ted

The ones outside are the ones who were locked out with no key;)

Only problem is if the killer hasnt been effective the lil stippy boogers will eat there way out by the easiest route, and that could be to inside, to then find a way outside again

Wasps are very intelligent, take a look at the Comb of a nest, hexagonal so theres no wasted spaces

Ant555

Thanks for the replies so far...

I'm hoping that there are very few 'inside' - the nest was probably only 24 hours old when I discovered it and I sealed it up in the late afternoon on a sunny day so I'm hoping many of the residents were out at work!

Although I have no concept as to how big a 24 hour old wasps next would be - either the physical size of it or in the number of residents.

I can't hear any buzzing in the roof area now - whereas I could when I first discovered it.

Fingers crossed that they will find somewhere else to live or just give up and call it a day.

evoke

I've just had a wasp's nest treated by a pest controller. He used a special powder and sprayed it through the entry points in the roof.

He told me that you should never block the entrance as the wasps near or inside the nest will go berserk and find another exit and the wasps on their way back will hang around and try and find another way in.

Wasp nest powder is designed to kill wasps when they make contact with it - returning wasps will get coated in it and the wasps already in the next will get coated in it.

You're also going to have the problem of potentially hundreds or even thousands of dead wasps rotting away.

Best to spray the nest but leave the entry/exit points open.