Importance of Drainage CCTV Surveys for Rat Control

Drainage CCTV surveys are a critical tool in identifying and managing rat infestations, especially in urban or domestic environments where rodents often use underground drainage systems to travel, nest, and access properties. It is thought that a estimated 90% of rat infestations within the domestic property originate from defective drainage.

As a NADC (National Association of Drainage Contractors) Certified Domestic Surveyor as well as a Member of the BPCA (British Pest Control Association) with over 34 Years of experience I aim to provide a fully integrated Pest Management approach with minimum chemical control and to provide my customer with a permanent solution. I use CCTV surveys as a integral part of my overall site inspections.

Why Rats Use Drains

Rats, especially brown rats (Rattus norvegicus), are naturally drawn to drainage systems because they offer:

Shelter and warmth

A water source

Food waste access

Underground travel routes (avoiding surface dangers)

Cracks, breaks, or open connections in drains often become entry points for rats into homes, gardens, and buildings.

What Is a Drainage CCTV Survey?

A drainage CCTV survey involves sending a small waterproof camera through the drainage pipes to visually inspect the system. It allows pest controllers or drainage specialists to identify:

Structural defects (e.g., cracks, breaks, dislodged joints)

Root ingress or blockages

Open pipe ends or redundant branches

Rodent activity (droppings, nests, direct sightings)

Rat entry/exit points to the surface or property

Why CCTV Surveys Are Important for Rat Control

It allows to identify damage drainage or possible points of entry into the property.

Rats inside a property almost always have an access point—often from the drains. A CCTV survey pinpoints where and how they are getting in.

Prevents Ineffective Treatments

Without knowing the source, pest control may rely too heavily on poison or traps, which might not solve the underlying issue—leading to repeated infestations.

Locates Defects Hidden Underground

You can’t see underground pipe damage from above. CCTV reveals invisible defects that might otherwise go undetected for years.

Helps Plan Permanent Proofing

Once defects are located, targeted drain repairs or Ratgates (like one-way valves) can be installed to physically stop rats from moving up through the pipework.

Supports Integrated Pest Management (IPM)

Drain inspections are a core part of an IPM approach, which focuses on long-term, environmentally sound solutions rather than just reactive poison use.

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Common Drain Issues Found by CCTV

Problem	Rat Risk	Solution
Broken or cracked pipes	Entry point	Pipe repair or relining
Open-ended branches	Easy access	Cap or seal off unused lines
Faulty manholes or chambers	Nesting/entry route	Repair or replace lids
Direct surface connections	Easy entry to property	Fit rat flap or blocker

Benefits to Property Owners / Landlords and Tenants

Peace of mind – knowing the exact cause and location of rat problems

Reduced long-term costs – by fixing the issue at its root

Increased property hygiene and safety

Supports warranty or insurance claims (some insurers require proof of survey).

Drainage CCTV surveys are one of the most effective diagnostic tools in rat control. They go beyond surface-level solutions to detect the real entry points and allow for targeted, long-term prevention.

Without a CCTV survey:

You’re likely just treating the symptoms, not the cause. You can place expensive rodenticides and your problem will reoccur.

Please feel free to contact myself to discuss you rat issue and the possibility of the issue being drainage related.