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Is 2026 the year other people have seen cockroaches in their property after a life time of never seeing one? (South West London)

14 replies

MyStalingrad · 14/09/2026 21:14

Hello,

I posted about this issue before when I was having a terrible (shit) week back in June.

After doing more research on the issue on Mumsnet, I've also noticed seems to be an issue affecting residents in South West London, and cockroaches seem to be emerging from gardens.

So to go over our issue, since June we've seen cockroaches in our flat. It's a Victorian ground floor maisonette, two out door spaces. Back garden, entrance from our kitchen, internal courtyard, door on the opposite end of our kitchen (it's a big open plan room).

Not lots, but on a couple of occasions I've seen and removed two in one night.

I saw another one tonight, on our kitchen ceiling. Above be our plants. Apparently they do like plants (according the last pest control technician).

I've had two different pest control companies in. The council contractor one, and a private company. The private company have done THREE visits with their spray. Last one visit was last Tuesday. The guy did the spray, and we followed the rule of not cleaning the floor for four days.

So now I'm just bereft, angry and fucking miserable.

Our place is very clean, the cleaner comes to do a full clean of the whole place every week and I clean too be because I really do like a clean and tidy place. I'm a bit OCD in that respect.

ChatGPT seams to suggest I get the pest control company back in to inspect rather than treat to find a source. I'm out of ideas so perhaps it's right? The only other things I can think of doing would be to:

  • Replace our dishwasher with a new machine, as it's well over ten years old (could that be the source?)
  • Flush out the outside drains with a nasty chemical to nuke the batards, whatever napalm equivalent I can find
  • Re-do our flooring to help seal the outside / garden a bit better, this is a job we were looking at doing a few years from now as they need restoring somewhat

We're in a bit of an unfortunate situation with the house, as we're surrounded by a mixture of older Victorian properties and a row of relatively new-builds next door. I'm assuming the new-builds are much more tightly sealed, with smaller gaps and fewer potential entry points, whereas our Victorian property is obviously a lot less well sealed. We're also right on the edge of the Common, so there's a lot of vegetation and wildlife around us.

We've never had this problem before. DH has owned the property since 2010 and this is the first time we've ever seen cockroaches. The extension was done in around 2015, so I don't know whether that's relevant either.
What's making it particularly difficult is that I have a three-year-old. I feel like such a failure for not being able to get on top of this and give him a completely safe, pest-free home. I know that probably sounds irrational, but it's genuinely upsetting when you're responsible for a small child.

I've reading Good Housekeeping that cockroaches are becoming more common because of warmer temperatures/climate change, and we certainly seem to be seeing them outside too. We have what is effectively a wall of glass at the back of the house, and at night I've noticed them on the outside of the back-door windows. Obviously that's less concerning than finding them indoors, but does that suggest they're primarily garden-dwelling cockroaches that are trying to get inside? Or does seeing them outside tell us anything useful about where they're coming from?

We've now had pest control treatments, but I'm still really anxious about the situation and would love to hear from anyone who's experienced something similar. Has anyone else had a persistent problem in a Victorian/older property, particularly near a park or lots of vegetation?

Is there anything practical that genuinely made a difference for you — sealing particular gaps, dealing with drains, changing anything around the garden, replacing appliances, etc.?
I'm mainly looking for a bit of reassurance and practical advice from people who've actually been through it. It's horrible, and I'd really appreciate hearing that we're not the only ones!

OP posts:
MosquitoFace · 14/09/2026 21:40

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baroqueandblue · 14/09/2026 21:46

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They carry diseases. OP has a young child.

Take your snide comments elsewhere?

Ooih · 15/09/2026 07:01

Is the chemicals worse than the roaches? I don't know but finding the source seems like a good idea

sandgrown · 15/09/2026 07:05

They like damp areas so your dishwasher might be leaking a bit? We bought a commercial business and found them round the washer and dishwasher .

sparrownetsuke · 15/09/2026 07:10

Cockroaches are bastard things. They are endemic where I live. We use cockroach baits which work reasonably well.

Your dishwasher might be contributing to the problem but IME all dishwashers do. Check under and in your toaster too. If you have a knife holder, check under there as well.

Gingerbread987 · 15/09/2026 07:22

Poor you - that sounds stressful.

i would focus on finding out how they are getting in, they can be resourceful! So I would get in the habit of leaving plugs in and if you go away put clingfilm over the toilet and cover any other holes in the sink/bath etc

How about putting flour, or something similar, across doors so you can see if they’re squeezing in any gaps there. And they are excellent climbers so it could be coming through and air vent brick or extractor fan pipe etc - maybe some really strong double sided sticky tape or something around those??

Then I would put a deterrent around those areas - and what about a trap outside so you’re stopping them from wanting to come in to your house and encouraging them to go elsewhere.

i agree, they probably are living in the drains.

is the pest control treatment supposed to deter them from coming in, or kill them once they’re in?

UneFoisAuChalet · 15/09/2026 07:32

In my experience, it was other people that were the problem. We saw a few cockroaches in our flat years ago. The management got pest control who sprayed a series of flats to no avail. One flat ignored the request and by the third time pest control came out, landlord demanded that the lone flat was sprayed as well.
Turns out that flat was the source of the problem- they had a plants that was crawling with them and as they weren’t fussed, it didn’t matter how many times the other flats were sprayed as they were the source.
So my advice - look outside your home.

MyStalingrad · 15/09/2026 13:04

Gosh, thanks to all that have responded! You dint know what the sympathy and advice means at this time. I'm losing my mind right now.

I will respond properly on my lunch break. Have emailed the pest control people and am formulating out own plan for how to stop this issue. So thanks for helping suggestions!

I actually saw three last night, in the end. Fucking bastards.

OP posts:
MyStalingrad · 15/09/2026 15:12

sparrownetsuke · 15/09/2026 07:10

Cockroaches are bastard things. They are endemic where I live. We use cockroach baits which work reasonably well.

Your dishwasher might be contributing to the problem but IME all dishwashers do. Check under and in your toaster too. If you have a knife holder, check under there as well.

What bait traps do you use? Do they look like the black cassette tape boxes? We've had some of them from the council contractor, but they didn't do much.

I'm sceptical about the glue poison too (that dark red stuff that looks like resin.

OP posts:
MyStalingrad · 15/09/2026 15:30

UneFoisAuChalet · 15/09/2026 07:32

In my experience, it was other people that were the problem. We saw a few cockroaches in our flat years ago. The management got pest control who sprayed a series of flats to no avail. One flat ignored the request and by the third time pest control came out, landlord demanded that the lone flat was sprayed as well.
Turns out that flat was the source of the problem- they had a plants that was crawling with them and as they weren’t fussed, it didn’t matter how many times the other flats were sprayed as they were the source.
So my advice - look outside your home.

Edited

I'm not sure about our case. As I say I bet the cockroaches don't bother next door (nearest side) because that row was only built after COVID, and they were built to a high standard.

Upstairs aren't suffering with it, they tell me. Its two couples. And the boys tell me they haven't seen any. I believe them because I know the girls would hate it and they would definitely get pest control in. Actually they are all about to move it, and the place will be empty. I wondered if I should ask the owner, who wants to sell it eventually, if she'd consider doing a treatment, but if they haven't seen any I wonder what's the point.

I've put all the plants outside with a view to giving them away. It's a shame, I was going for a bit of an orangery vibe

OP posts:
MyStalingrad · 15/09/2026 15:39

@Gingerbread987

i agree, they probably are living in the drains.

Yeah I'll try and get some quotes from drain specialists.

is the pest control treatment supposed to deter them from coming in, or kill them once they’re in?

To kill the ones that are in. But I think they are coming in from the garden so it's been of little help overall.

I'll have an attack plan for the garden. Get rid of bags (We've got some green waste sacks), get rid of the decking because it's rotting and needs replacing anyway, so it's probably harbouring them. Even if we just use a duck board to get to the lawn, I want that decking completely gone. We have a friend's wooden seat that we agreed to take care of whole she's been nomadic, that will go. Any random flower / plant pots that collect water will go. Move my son's sandpit toys (we don't have a sandpit, they're just for the park).

OP posts:
mathanxiety · 15/09/2026 20:44

Can you lay your hands on borax powder? Mix with sugar (look up quantities online) and spread around.

Are you sure your upstairs neighbours are as clean as you? Your flat might just be a route to a filthy one upstairs.

Neighbours will often lie about pest and vermin sightings.

MyStalingrad · 15/09/2026 22:24

mathanxiety · 15/09/2026 20:44

Can you lay your hands on borax powder? Mix with sugar (look up quantities online) and spread around.

Are you sure your upstairs neighbours are as clean as you? Your flat might just be a route to a filthy one upstairs.

Neighbours will often lie about pest and vermin sightings.

Edited

I will look into this. Thanks!

Obviously I don't really know but they are nice clean cut sort of people, late twenties with good jobs. I'm sure their place is pretty decent. I know the girls living there hate creepy crawlies (it came up randomly one time) so if they had the same issue I'm sure we'd have heard about it.

OP posts:
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