Are Drain Surveys for Pests Worth It?
Monday 16th February 2026
Are Drain Surveys for Pests Worth It?
Drainage systems are one of the most overlooked entry points for rodents in London properties. From period homes to commercial buildings, damaged or ageing pipework can provide concealed access directly into a structure.
At Pestec Pest Control, we regularly find that ongoing rodent problems originate below ground level — not inside the property itself. If you’re purchasing, renovating, or experiencing unexplained pest activity, a CCTV drain survey can be a highly worthwhile investment.
Why Drains Attract Rodents
London’s ageing drainage infrastructure creates ideal conditions for rats and mice. Rodents can:
Enter through cracked or collapsed clay pipes
Exploit displaced or open joints
Gnaw through weakened plastic pipework
Travel via redundant connections
* Surface through damaged inspection chambers
Once inside floor voids or cavity walls, they can move undetected between neighbouring properties. In many cases, treating the interior alone will not solve the root cause.
What Is a CCTV Drain Survey?
A CCTV drain survey is a non-invasive inspection of your drainage system using a high-resolution camera. It allows us to clearly identify:
Structural cracks or fractures
Collapsed or misaligned sections
Blockages and heavy build-up
Root ingress
* Potential rodent entry points.
Where necessary, we carry out high-pressure jetting beforehand to ensure clear visibility. The result is a precise diagnosis — not guesswork.
When Is a Drain Survey Recommended?
A professional drain survey is particularly advisable:
Before purchasing a property
Prior to major renovation works
If there’s a history of rodent issues
In basement conversions
* In multi-occupancy buildings
Undetected drainage faults can lead to recurring infestations, contamination risks, and costly structural repairs. Identifying issues early allows for targeted, long-term solutions.
Signs Rodents May Be Using Your Drains
You may want to consider a drain inspection if you notice:
Persistent foul odours from sinks or toilets
Scratching sounds beneath floors
Rats seen near external drains
Drain flies indoors
* Damage around inspection covers
These signs often indicate below-ground access points.
Are Drain Surveys Worth It?
In many cases, yes.
A CCTV drain survey provides clarity, prevents repeated call-outs, and protects your property from hidden structural defects that allow pests to enter. Especially in London — where drainage systems are often shared and interconnected — identifying the source is critical.
At Pestec Pest Control, our experienced technicians combine advanced CCTV inspection equipment with practical pest control expertise to deliver clear, evidence-based solutions.
Book a Professional Drain Survey
If you suspect rodents may be entering through your drainage system — or want reassurance before a purchase or renovation — we’re here to help.
Call Pestec Pest Control on 07383 580 608 or contact us online to arrange a professional CCTV drain survey and protect your property from hidden pest risks.
