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Advice on wasp nests
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fuzzy



Joined: 29 Nov 2013
Posts: 1315
Location: The Marches, UK

PostPosted: Mon Sep 30, 2019 12:56 pm    Post subject: Advice on wasp nests Reply with quote

Last year we had wasps in a shed. I would have left them but they got crazy in late summer, so I couldn't get in the shed. This year they are in a kitchen roof void, via a gap in the plastic roof trim. They are are on the other side of plasterboard, but they are noisy at times and I wonder of the consequences. Presumably it deters mice, rats etc.

Do they return annually?

Do they damage anything inside?

If they are dormant, is there a time I could block the entrance up?

Would they find a new, worse, exit?
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PS_RalphW



Joined: 24 Nov 2005
Posts: 5770
Location: Cambridge

PostPosted: Mon Sep 30, 2019 1:09 pm    Post subject: Reply with quote

Wasps generally eat wood and leaf matter to digest and make their nests. Internet (admittedly from a pest control company) say they also eat plaster and presumably plasterboard

Edit

We had a wasp's nest in our kitchen wall. Moth killer puffed straight into the flight hole killed them completely after 2 applications. A lot cheaper than professional call out

Edit

We left a nest in a wood pile in the garden alone
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adam2
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Joined: 02 Jul 2007
Posts: 7947
Location: North Somerset

PostPosted: Mon Sep 30, 2019 1:23 pm    Post subject: Reply with quote

If wasps are causing a significant nuisance, then I feel that the moderate and targeted use of modern chemical insecticide is justified.

Foam based wasp killer in an aerosol type can is available. The material emerges from the can in a solid jet of foam, not as a spray. This may be directed at the entrance to the wasp nest from a safeish distance.
As the pests burrow through the foam it kills them by contact.

Keep pets and livestock away. Take a shower and launder clothes after use of this wasp killer.

If the problem is really serious then you may need to engage a pest control company. They use a fire extinguisher filled with wasp killing foam mixture instead of fire fighting foam solution.

Suggest a fleabay search for "Rentokil wasp killing foam"
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adam2
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Joined: 02 Jul 2007
Posts: 7947
Location: North Somerset

PostPosted: Mon Sep 30, 2019 1:36 pm    Post subject: Reply with quote

Modest numbers of wasps may be destroyed without chemicals by use of electric insect killers.
These use an ultraviolet lamp to attract flying insects which are then killed by a high voltage metal grid.

I would be very doubtful about cheap electric insect killers, poor quality, ineffective, power wasting, and sometimes unsafe.

A secondhand unit from say an industrial kitchen might be better. The special ultraviolet lamps loose their effectiveness in time even if still lit.
Replace if in doubt.

If targeting wasps rather than flying insects in general, then replacing the supplied ultraviolet fluorescent lamp with a bright green one is very effective. Bright green seems to attract wasps.
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vtsnowedin



Joined: 07 Jan 2011
Posts: 6304
Location: New England ,Chelsea Vermont

PostPosted: Mon Sep 30, 2019 7:58 pm    Post subject: Reply with quote

Wasps like bees go home to bed at night. Wait until an hour after sundown and you can plug the hole and trap them all. (if they only have one hole). I'd dose the hole with wasp killer as well but that is just my preference. For a nest hanging from the underside of a deck I have waited till dark and slid a plastic bag over the whole nest and pinched it off. taken away from the house and added a half cup of gasoline and a match. Crispy nasty critters.
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kenneal - lagger
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Joined: 20 Sep 2006
Posts: 12026
Location: Newbury, Berkshire

PostPosted: Tue Oct 01, 2019 2:28 pm    Post subject: Reply with quote

Bees are killed by the fumes of petrol so I would think that wasps would be the same. A few drops of petrol in a plastic bag should do the trick without the flames. Flames can be fun though!!
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vtsnowedin



Joined: 07 Jan 2011
Posts: 6304
Location: New England ,Chelsea Vermont

PostPosted: Tue Oct 01, 2019 5:58 pm    Post subject: Reply with quote

Bee careful you don't set the woods on fire. Smile
https://www.washingtonpost.com/nation/2019/10/01/tree-thieves-tried-burn-bee-nest-they-started-forest-fire-that-ravaged-acres-protected-land-feds-say/
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GalebG4M



Joined: 23 Oct 2019
Posts: 4

PostPosted: Wed Oct 23, 2019 6:45 pm    Post subject: Reply with quote

I know it's not the cleanest way to do it, but I usually go with chemical insecticides when there's a wasp nest inside of my house or in the shed. Gasmask on, and strike in the dead of night, when they're sleeping! The process when I'm doing it outside is more refined: it's still insecticide based, but I put first the nest in a large rubbish bag and then spray the insectiide in the bag. Close, let rest for a day, dispose of it.

But in any case, I've got a personal vendetta against wasps and hornets. They're aggressive, unpleasant little things and I exterminate then as soon as I locate the nest... especially because they're attacking my bees and don't let them harvest pollen as they'd like to.
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Catweazle



Joined: 17 Feb 2008
Posts: 2499
Location: Little England, over the hills

PostPosted: Wed Oct 23, 2019 10:05 pm    Post subject: Reply with quote

Raid is nerve gas for wasps. A good squirt up the entrance hole and come back the next day. I did it last weekend when I found a nest in my outdoor pool table.
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fuzzy



Joined: 29 Nov 2013
Posts: 1315
Location: The Marches, UK

PostPosted: Sun Jan 26, 2020 6:56 pm    Post subject: Reply with quote

I chickened out and got someone [cheap] as it was about 12 foot above ground. I might start sealing everywhere before spring.
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kenneal - lagger
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Joined: 20 Sep 2006
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Location: Newbury, Berkshire

PostPosted: Sun Jan 26, 2020 7:44 pm    Post subject: Reply with quote

A few of notes about wasps.

Firstly, it is only the queen which survives through the winter by hibernating and she doesn't do that in a nest. All the others die.

Secondly, wasps only use a nest for the one season and the queen starts a new nest for the next year. If you find an empty nest it is one from previous years.

Thirdly, wasps do a really good job in the garden keeping crop pests down and clearing up rubbish so only kill off the ones which are a real problem not just an occasional nuisance.
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vtsnowedin



Joined: 07 Jan 2011
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Location: New England ,Chelsea Vermont

PostPosted: Mon Jan 27, 2020 12:24 pm    Post subject: Reply with quote

All good stuff there. I leave them alone unless they have built a nest where human activity will stir them into a defense action. Under the picnic table, or porch roof or under a deck have all had their turn and they are dealt with. An interesting moment occurs when mowing hay and you chop through a yellow jackets nest. A cloud of war follows you and may still be looking for you the perpetrator on your next pass around the field. It is the reason I keep the soft cab on the tractor until after I have clipped all my fields. Back in the day when I was mowing these same fields with horses I got a couple of wild rides. A draft horse old enough to vote will run like derby day with a dozen wasps stinging its privates.
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Little John



Joined: 08 Mar 2008
Posts: 8164
Location: UK

PostPosted: Mon Jan 27, 2020 1:18 pm    Post subject: Reply with quote

I absolutely hate wasps. They kill my bees and steal the honey.

But, I am with Ken on this. Unless they are proving to be a real menace to me or mine, I consider I just have to put up with them. They are just trying to make a living like the rest of us.
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adam2
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Joined: 02 Jul 2007
Posts: 7947
Location: North Somerset

PostPosted: Tue Jan 28, 2020 2:27 am    Post subject: Reply with quote

Wasps are also a danger to the smaller pets and livestock.
A single wasp sting can kill a kitten or a young chick. Several can kill a piglet. A swarm can allegedly kill a cow.
A horse stung by a wasp is apt to bolt, perhaps killing itself or the rider.
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eatyourveg



Joined: 15 Jul 2007
Posts: 1284
Location: uk

PostPosted: Tue Jan 28, 2020 8:48 pm    Post subject: Reply with quote

The thing is wasps are terrified of hornets. They won't go anywhere near any site where there is a hornets nest. Hornets find wasps taste yummy.
I have a campsite, which has a recycling area including food waste. In former times this was a big draw for the little yellow bastards, but no longer. A few years ago I put the remains of a hornets nest (the previous years from the loft!) near the recycling. No more wasps. Obviously it didn't last long what with the weather at which time I purchased a thing called 'Waspinator' which is a fake hornet nest. Worked for me, no wasps.
You might find this useful LJ as you keep bees, or not. Your wasps are northern wasps and thus double hard, whereas I have been dealing with the soft as shite southern variety.
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