Drainage & Sewer Issues
Rat & Rodent Pest Control In Farnborough
Many rat infestations begin underground. Rats are strong swimmers and highly adaptable, regularly travelling through sewer systems and drainage networks in search of warmth, shelter, and food. When a drainage system is damaged or poorly sealed, it can provide a direct route into homes and commercial properties.
At DCL Pest Control, we frequently find that ongoing or repeat rodent problems are caused by underlying drainage faults. Identifying and resolving these issues is essential to stopping infestations at the source.
How Rats Use Drainage Systems to Access Properties
Rats naturally live and travel through sewers, making drainage systems one of the most common entry points into buildings. They exploit weaknesses such as cracked pipes, misaligned joints, or uncapped inlets, enlarging small gaps until they can pass through. Once inside the drainage system connected to a property, rats can emerge through toilets, gulleys, pipework, or internal wall cavities.
Because this activity happens underground, property owners are often unaware of the problem until rats appear inside the building. Without addressing the drainage fault, infestations are likely to return , even after treatment.
Even small damage can quickly escalate into expensive repairs.
Warning Signs of Drainage-Related Rodent Activity
Drainage-based infestations don’t always present obvious signs at first. However, common indicators include persistent rat problems despite treatment, scratching sounds coming from lower walls or floors, unexplained blockages, slow-draining water, and strong odours coming from drains or pipework.
If rats keep returning or appear to be entering from ground level, the drainage system is often the cause.
Why Treatment Alone Isn’t Enough
Simply removing rats without addressing how they are entering the property is rarely effective in drainage-related cases. Sewer rats will continue to follow the same pheromone trails through the drainage system, re-entering the property through the same faults.
To stop infestations permanently, the entry point must be identified and sealed, not just treated.
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Get Expert Help — Stop Rats and Mice in Their Tracks
DCL Pest Control, Rodent Prevention & Drainage Investigation Ltd specialise exclusively in rodent control and prevention, offering professional, reliable support 24/7. With years of experience and advanced investigative equipment, we tackle infestations at the source and make sure they don’t come back.



