How to Get Rid of Rats in London: The Complete Guide

Why London Has a Rat Problem

London is home to an estimated 10 million rats — roughly one for every person. The city's ageing Victorian sewer system, dense housing, restaurant waste, and construction activity create ideal conditions for rat populations to thrive. Brown rats (Rattus norvegicus) are by far the most common species found in London homes and businesses.

Signs You Have a Rat Infestation

Identifying a rat problem early is critical. Look out for these warning signs:

• Droppings — dark, pellet-shaped, approximately 1–2cm long, found along walls and behind appliances
• Gnaw marks — rats constantly gnaw to keep their teeth short; look for damage to cables, wood, and food packaging
• Scratching noises — particularly at night, often in walls, ceilings, or under floorboards
• Burrows — holes in garden soil, under decking, or along fence lines
• Smear marks — dark greasy marks along walls and skirting boards where rats travel
• Nests — shredded material (paper, insulation, fabric) in hidden corners
• Urine trails — rats urinate constantly; a musty ammonia smell is a strong indicator

Health Risks of Rats in Your Home

Rats carry serious diseases that can be transmitted to humans:

• Leptospirosis (Weil's disease) — spread through rat urine, can cause liver and kidney failure
• Salmonella — contaminated food and surfaces
• Hantavirus — rare but serious respiratory illness
• Rat bite fever — from bites or scratches
• Fleas and ticks — rats carry secondary parasites into your home

How Rats Get Into London Properties

Understanding entry points is key to prevention:

• Drains and sewers — rats can swim up through toilet pipes and enter via broken drain covers
• Gaps in walls — a rat can squeeze through a hole the size of a 50p coin (20mm)
• Air bricks and vents — unprotected vents are common entry points
• Under doors — gaps as small as 10mm are enough for young rats
• Roof spaces — via climbing ivy, trees, or neighbouring roofs

Professional Rat Control in London

DIY rat control using shop-bought poison is often ineffective and can be dangerous. Professional pest controllers use:

• Tamper-resistant bait stations — safe for children and pets
• Tracking dust — to identify rat runs and entry points
• Proofing — sealing all entry points to prevent re-entry
• CCTV drain surveys — to identify if rats are entering via the sewer system
• Manhole flap valves — one-way valves that prevent rats entering from drains

Prevention Tips

• Store food in sealed containers
• Keep bins tightly closed and away from the house
• Remove bird feeders or use rat-proof designs
• Clear garden clutter and woodpiles
• Seal gaps around pipes, cables, and air bricks
• Keep drains clear and in good repair

When to Call a Professional

Call a professional pest controller immediately if you:

• Find droppings inside your home
• Hear scratching noises at night
• See a rat during the day (indicates a large population)
• Have young children or vulnerable adults in the property
• Run a food business (legal requirement to act immediately)

Pest Control RAF SERV LTD provides fast, professional rat removal across all London postcodes. We offer same-day emergency callouts, fully guaranteed treatments, and proofing services to prevent re-infestation.

Call us now on 07586 072087 or book online for a same-day appointment.