Rats in Your Drains? How CCTV Surveys Find Hidden Entry Points in Yorkshire

# Rats in Your Drains? How CCTV Surveys Find Hidden Entry Points in Yorkshire

You've set traps. You've hired pest control. The bait gets taken — but the rats keep coming back. Sound familiar? If so, the problem almost certainly isn't your kitchen or your bins. It's underground, where you can't see it, and where no amount of surface-level treatment will reach.

According to guidance from the British Pest Control Association (BPCA), up to 80% of rat infestations in urban areas originate from the drainage system. Rats exploit defects in private pipework — cracked joints, broken inspection chambers, corroded pipe ends — to move silently from the sewer network directly into the fabric of your home. Yorkshire's older housing stock, with miles of ageing clay and pitch-fibre drains, makes this a particularly common problem across Leeds, Bradford, Sheffield and beyond.

A CCTV drain survey is the only reliable way to find those entry points and seal them for good.

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How Do Rats Get Into Houses Through Drains?

Rats are exceptional swimmers and can hold their breath for several minutes. A healthy rat can squeeze through a gap of around 25mm — roughly the diameter of a 50p coin. The UK sewer network gives them the perfect habitat: warm, dark, full of food, and largely undisturbed.

When private drain pipework deteriorates, small defects open up that connect the sewer system to the void beneath your floor slab, your cavity walls, or your inspection chambers. From there, rats can travel upward through gaps around soil pipes and service entries, eventually appearing inside your property — sometimes in the loft, sometimes under the floorboards, sometimes in the walls.

In Leeds and West Yorkshire specifically, drainage specialists regularly report rats entering homes through defects in private drains and broken inspection chambers — particularly in Victorian-era terraced streets where clay drain runs are now over 100 years old.

The frustrating truth is that pest controllers can kill rats inside a building, but they cannot stop more entering if the drain defect remains open. That's why a CCTV survey comes first, not last.

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What Does a CCTV Survey Find That Pest Control Misses?

What are the most common drain defects that let rats in?

A professional CCTV drain survey camera — pushed through your pipework from the nearest inspection chamber — will identify:

• Open pipe joints — gaps between pipe sections where the seal has failed, leaving a space wide enough for a rat to push through
• Cracked or fractured pipes — common in older clay and pitch-fibre systems, creating holes at ground level
• Broken or missing rodding eyes — open-ended access points left unsealed in the drain run
• Collapsed inspection chambers — chamber walls that have crumbled, creating large voids connected to the sewer
• Displaced junctions — where a lateral pipe has slipped out of the main drain run, leaving an open gap

Our engineers use iTouch CCTV cameras — high-resolution, purpose-built survey equipment — to capture clear footage at every point in your drain run. The footage is recorded and you receive a written report with exact locations of any defects, graded by severity using the WRC Sewerage Rehabilitation Manual standard.

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How Common Is the Rat Problem in Yorkshire?

Should Yorkshire homeowners be concerned about drain-related rat ingress?

Yes — and the scale is significant. UK-wide, over half a million rat infestations were reported to local councils in less than three years, according to Freedom of Information data analysed and published by drainage specialists. The UK rat population is estimated at around 80 million — roughly the same as the human population of Germany.

Yorkshire's urban density, combined with an ageing underground drainage network, creates ideal conditions. Areas like inner-city Leeds, older Bradford terraces, and the dense residential streets of Huddersfield and Wakefield all see elevated numbers of drain-related rat reports. Spring and autumn — when rats are more active above ground — tend to bring a spike in reports, but the underlying drain defects are present year-round.

If you've had a rat sighting inside your property, or a pest controller has told you they suspect drain ingress, acting quickly matters: a rat colony can grow from two to over 1,200 in a year under the right conditions.

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Will Pest Control Alone Fix a Drain Rat Problem?

What's the difference between pest control and a drain survey for rat problems?

Pest control and drain surveys address completely different parts of the problem:

Pest control kills rats that are already inside the building. Baiting, trapping, and proofing measures can reduce active numbers and block some surface-level entry points around pipes and airbricks. A CCTV drain survey finds and documents the underground defect that is the source of the ingress. Without identifying and repairing that defect, new rats will continue entering through the same route indefinitely.

The most effective approach combines both: have a CCTV survey carried out first to identify drain defects, repair those defects using drain lining or excavation, and then have pest control address any rats remaining inside the building.

Many pest controllers in Yorkshire now recommend a CCTV drain survey as a first step before beginning a baiting programme — because they've learned from experience that surface treatment alone rarely achieves a lasting result.

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How Do You Fix Drain Defects That Let Rats In?

Once the CCTV survey has located and graded the defects, repair options include:

• Drain lining (no-dig repair) — a resin-impregnated liner is inserted and cured in place, sealing cracks and open joints from the inside without excavation. Often the most cost-effective solution.
• Patch lining — for isolated small defects, a localised patch can be applied rather than lining the full run.
• Excavation and pipe replacement — for collapsed pipes or heavily damaged sections, the drain is exposed and replaced.
• Chamber rebuilding — broken inspection chambers are rebuilt and sealed.

Following repair, a pre-purchase drain survey approach can be applied to verify the fix — the camera goes back in to confirm all defects have been addressed and no new gaps remain.

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Book a Rat Ingress CCTV Survey in Yorkshire

If you're dealing with recurring rat problems and standard pest control isn't holding, we can help identify what's happening underground. Our surveys cover the full Yorkshire region — Leeds, Bradford, Sheffield, Huddersfield, Wakefield, York, Harrogate, Doncaster and surrounding areas.

We provide clear upfront pricing before any work begins. Call 0113 734 2245 to discuss your situation, or fill in our contact form and we'll get back to you promptly.

Don't keep treating the symptoms. Find the cause.