Drain problems are one of the most common hidden causes of pest activity around UK homes and businesses. Rats regularly travel through underground drainage systems and can enter properties through damaged pipes, faulty joints, or open drains.

At EradiControl we provide professional drain camera inspections and non return valve installation to identify entry points and stop rodents using your drains as a highway into your property.

This service is available across Christchurch, Bournemouth, Poole, Southampton and surrounding areas in Dorset and Hampshire.

If you are dealing with recurring rodent activity or want to prevent rats entering through your drainage system, a professional inspection is the most reliable way to identify the problem.

Why Rats Use Drains to Enter UK Homes

Rats are excellent climbers and swimmers. In urban and residential areas they often live within sewer and surface drainage systems. These networks provide warmth, shelter, and a constant food supply.

From these systems, rats can enter properties through:

• Damaged underground pipes
• Cracked clay drainage pipes
• Broken pipe joints
• Open gully drains
• Toilet connections
• Unprotected external drain outlets

Once inside the drainage system connected to your home, rats can sometimes enter through toilets, floor drains, or damaged pipework beneath the property.

This is why rodent problems often return unless the drainage entry point is properly identified and secured.

If you are already dealing with rats, our professional rodent control services can remove the infestation while we investigate the source.

What Is a Drain Camera Inspection

A drain camera inspection involves inserting a specialist waterproof camera into your drainage system to inspect the internal condition of pipes.

This allows us to see exactly what is happening underground without the need for digging or disruptive investigation.

During a drain check we can identify:

• Cracked or collapsed pipes
• Open joints where rats can enter
• Displaced pipe sections
• Blockages or debris build up
• Signs of rodent activity within the pipe system
• Entry points connected to your property

This type of inspection is particularly useful if rodents keep returning even after treatment.

Signs Rats May Be Entering Through Your Drains

Drain related infestations often show specific warning signs.

You may notice:

Rats Appearing Indoors Without Obvious Entry Points

If you cannot find holes in walls, air bricks, or doors but rats are appearing inside the property, drains are often the hidden access route.

Noises From Toilets or Pipework

Scratching, movement, or unusual sounds from pipework can sometimes indicate rodent activity inside drainage systems.

Repeated Rat Infestations

If rats keep returning even after treatment, there is often an unresolved access point within the drainage network.

Rats Seen Near External Drains

Seeing rats regularly around gully drains, patios, or waste pipes can indicate they are entering through underground pipework.

A camera inspection allows us to confirm whether the drainage system is involved.

What Is a Non Return Valve

A non return valve, sometimes called a rat blocker or rat flap, is a specialist device fitted inside drainage pipes.

It allows wastewater to flow out of the property but prevents rodents from travelling back through the pipe.

Once installed, it creates a physical barrier that stops rats accessing the internal drainage system of your home.

This is one of the most effective long term solutions for preventing rat entry through drains.

When Non Return Valves Are Recommended

Non return valves are commonly installed when:

• Rats are entering properties through drainage pipes
• A drainage inspection confirms rodent activity in the system
• Properties are located near sewer lines or waterways
• Older clay pipe systems have gaps or joint movement
• Preventative protection is required for vulnerable properties

Many UK homes have drainage systems installed decades ago, often using clay pipes that can shift or crack over time. This creates easy access points for rodents.

Installing a non return valve provides an additional layer of protection.

Our Drain Inspection and Installation Process

Initial Assessment

We begin by assessing the property and discussing the history of the rodent problem. This helps determine whether the drainage system is a likely entry point.

Drain Camera Check

A specialist inspection camera is inserted into the drain to examine the pipework. The camera transmits a live image so we can identify faults, gaps, or rodent access points.

Identification of Entry Points

If rats are using the drainage system, we identify exactly where they are gaining access to the property.

Non Return Valve Installation

Where appropriate, we install a professional grade non return valve within the pipe system to prevent rodents travelling back through the drain.

Advice on Prevention

We also provide practical advice on reducing rodent attraction around the property and protecting external drains.

Why Drain Investigations Are Important for Rodent Control

Many rodent infestations originate from drainage systems. Treating the rats without addressing the entry route often results in the problem returning.

A professional drain inspection helps to:

• Identify hidden entry points
• Confirm whether rats are travelling through pipes
• Prevent repeated infestations
• Protect the drainage system from further damage
• Provide long term rodent prevention

If the problem is confirmed to be drain related, combining inspection, valve installation, and treatment offers the most reliable solution.

Properties Most at Risk of Drain Related Rat Problems

Certain types of properties are more vulnerable to this issue.

These include:

• Older homes with clay drainage pipes
• Properties near rivers or watercourses
• Homes located close to sewer lines
• Urban areas with high rodent populations
• Buildings with shared drainage systems

Homes across Christchurch, Bournemouth, Poole, and Southampton can all experience drain related rodent problems due to ageing infrastructure and dense urban drainage networks.

Preventing Rats from Entering Through Drains

In addition to installing non return valves, there are several practical steps property owners can take.

Keep External Drains Clean

Blocked or dirty drains attract rodents searching for food and shelter.

Repair Broken Drain Covers

Damaged covers allow rats direct access into the drainage system.

Avoid Flushing Food Waste

Food waste in drains can attract rodents within sewer systems.

Monitor Recurring Pest Activity

Repeated rodent sightings can indicate an unresolved access point that requires professional investigation.

For ongoing rodent issues, our local pest control services in Christchurch and surrounding areas can identify and resolve the source of the problem.

Areas We Cover

EradiControl provides drain inspections and non return valve installation across Dorset and Hampshire, including:

• Christchurch
• Bournemouth
• Poole
• Southampton
• Lymington
• New Forest areas
• Surrounding towns and villages

Our local knowledge allows us to identify common rodent entry routes and drainage issues found in properties across the region.

When to Book a Drain Camera Inspection

You should consider a professional inspection if:

• Rats keep returning after treatment
• Rodents appear inside the property unexpectedly
• You hear noises from toilets or drainage pipes
• There are visible signs of rat activity near drains
• You want preventative protection against drain entry

Early investigation can prevent larger infestations and reduce the risk of property damage.

Frequently Asked Questions

Professional Drain Inspection and Rat Prevention

If you suspect rats may be entering through your drainage system, identifying the source quickly is essential.

EradiControl provides professional drain camera inspections and non return valve installation to locate entry points and stop rodents accessing your property.

If you are experiencing recurring rat activity or want to protect your home from drain related infestations, contact our team today to arrange an inspection.

Get in touch through our contact page to book a visit or discuss your situation.