Why Do Wasps Problems Keep Coming Back in Greenwich Properties?

It Is Never the Same Nest

This is the fact that reframes the entire question, and most people have not been told it.

A wasp nest is used for a single season. In autumn the colony dies off. New queens leave, mate, and overwinter somewhere entirely separate - under bark, in a shed, in a loft, in a fold of fabric. The nest they came from is finished and is never reoccupied. Ever.

So if you have had a nest in the same soffit three years running, you have not had a recurring infestation. You have had three unrelated queens independently deciding that particular opening was a good place to start a colony.

They are not coming back. They are choosing, and they are choosing the building.

What a Queen Is Actually Choosing

In spring a queen looks for a dry, sheltered, defensible cavity with a small opening. That is the entire specification, and buildings are extremely good at providing it.

• A gap at a soffit, fascia or roof verge. Dry, sheltered, and leading into a large void. The single most chosen location on a house.
• An air brick with a broken or missing cover.
• A hole in old pointing, or a gap where render has failed.
• Under a roof tile, particularly at an edge or valley.
• The void behind a bargeboard, cladding or signage.
• A shed or garage roof space, which is a soffit gap with fewer steps.

Notice that every one of those is a feature of the building rather than anything to do with the previous nest. That is why treating last year's nest does nothing to prevent this year's, and why an old nest left in a loft is not an attractant.

So Why This Building and Not the One Next Door?

Usually because it genuinely is more suitable, and the reasons are boring structural ones:

1. Age of the roofline. Timber soffits and fascias that have had decades of weather open up gaps that newer or plastic ones do not.
2. Aspect. A warm sheltered elevation is more attractive than a cold exposed one, which is why the same side of a house tends to be chosen repeatedly.
3. Undisturbed voids. A roof space nobody enters is better than one that is used for storage.
4. Outbuildings. A property with a shed, a garage and a summer house simply offers more candidate sites than one without.

The One Thing That Changes It

Closing the openings. It is proofing work rather than pest control, it is priced separately at £180, up to 1 hour, and it is the only intervention that affects next year rather than this one.

Two points of timing make the difference between it working and it being a waste:

• Do it after the season, not during it. Sealing openings while a colony is active traps it inside, which sends it looking for another way out - frequently into the room on the other side of the wall.
• Do it before spring. The choice is made early, so work done in late autumn or winter is in place before any queen is looking.

And the honest limit: where the opening is a rotten soffit, a failed verge or displaced tiles, that is roofing work rather than proofing, and a roofer will quote it. We will describe what we found clearly enough for them to price it.

Three Things That Do Not Cause a Recurrence

• An old nest left in place. It does not attract a new queen and it will not be reoccupied. Removing it is cosmetic.
• The previous treatment. A treated nest does not leave anything behind that makes the site more attractive.
• Anything about how the property is kept. Unlike most pests on this site, wasps are choosing a cavity, not a food supply. Bins and housekeeping are irrelevant to whether a queen picks your soffit.

When It Is Genuinely a Different Problem

Two situations look like recurrence and are not:

A second nest in the same season. Uncommon but it happens, particularly on a property with several suitable sites. Tell us at the booking if you suspect more than one active nest and we will confirm the position before the visit rather than on the doorstep.

The nest is not on your property at all. Wasps commuting across your garden every summer to a nest three houses away will look identical to having your own. The test is the same one as always: is there a steady two-way stream into a single point on your building?

What a Realistic Result Looks Like

Nobody can promise a wasp-free property, because the wasps you see in August are mostly foraging from elsewhere. What is achievable is a building that a queen does not choose in spring - and that is a proofing job done in winter, not a pest treatment done in summer.

A Winter Checklist for a Property That Gets One Every Year

Everything here is done between late autumn and early spring, when no colony is active and before any queen is looking.

1. Walk the perimeter with binoculars and note every gap at the soffit, fascia and verge, on all elevations.
2. Check the air brick covers - broken and missing ones are among the easiest openings to close properly.
3. Look at the roof edges and valleys for displaced or lifted tiles.
4. Check the sheds and the garage, including the roof space if there is one. These are the sites most often chosen and most often overlooked.
5. Decide what is proofing and what is roofing. A gap that can be properly covered is proofing work; a rotten soffit or a failed verge is a roofer.
6. Get it done before spring. The choice is made early in the season.

One winter of this on a property that has had a nest two or three years running is usually the end of it, and it costs less than the treatments it replaces.