Manchester Pest Control · Pest Advice Blog
How Rats Get Into Homes in Manchester, and the Signs They Already Have
Published · 7 min read · Certified Technician Guide
Brown rats like to travel tight to walls and fences.
Drains, air bricks, pipe runs and shared walls: how rats get into homes across Manchester, the warning signs inside, and why finding the route is a job for a professional.
Overview
Rats do not appear from nowhere. Every rat in a kitchen, loft or under a floor got there by a route, and in Manchester's mix of Victorian terraces, interwar semis and converted mills, those routes are often surprisingly hidden. Understanding how rats get into homes helps you recognise the warning signs early and explains why finding the way in is the heart of any lasting fix.
This is not a guide to doing the work yourself. Tracing rat routes often means lifting drain covers, opening up voids and understanding how a building has been altered over a hundred years. It is a job for a trained technician. What follows will help you spot the problem and know when to call.
The usual ways rats get into homes
Brown rats are strong, agile and persistent. They can climb rough brickwork, swim through pipes and gnaw through softer materials. These are the routes we come across most often across the city.
### Broken or disused drains
This is the big one in older neighbourhoods. Clay drains laid generations ago crack, joints shift and redundant pipes from old outside toilets or removed sinks are sometimes left open underground. Rats living in the sewer network can follow these faults right up to the space beneath a house.
### Damaged air bricks
Air bricks ventilate the void under suspended timber floors. When the clay cracks or the grille breaks, it creates an opening straight into that void.
### Pipe and cable entries
Wherever a waste pipe, gas pipe or cable passes through an outside wall, there can be a gap around it. These are often behind fitted units or low on the wall where nobody looks.
### Shared voids and party walls
In terraces around Moss Side and Rusholme, floor voids, lofts and chimney breasts can connect neighbouring homes. A rat problem in one house is often a problem for the row.
### Roofs and climbing routes
Ivy, climbing plants and drainpipes give rats a way up to eaves and loose roof tiles, especially where a garden backs onto a canal, railway or overgrown land.
Signs rats have already found a way in
Because the routes are hidden, most people realise they have a problem from what happens inside.
Broken air bricks are one of the routes our technicians check on older homes.- Heavy scratching or scurrying in ceilings, walls or under floors after dark.
- Droppings that are larger and thicker than a mouse's, often in small groups along a route.
- Gnawing on skirting boards, door corners, plastic pipes and food packaging.
- Dark smear marks along walls and around holes where rats repeatedly squeeze through.
- A strong, stale smell in a loft, under the stairs or below floors.
- Burrows in the garden, especially beside walls, sheds and decking.
- Fresh soil or debris appearing near an air brick or around a drain cover.
If you are unsure whether you are dealing with rats or mice, our guide to rat and mouse identification in Manchester sets out the differences. For mice specifically, see our article on mice in your home.
Why rats in the house should never be left
Rats are one of the pests we always treat as a priority.
Property damage. Rats gnaw constantly. Timber, insulation, plastic pipework and cables are all at risk. Chewed electrical wiring is a well known fire hazard, and gnawed water pipes can leak unseen inside walls.
Contamination. Rats travel through drains and leave droppings and urine wherever they go, including on kitchen surfaces. They are widely recognised as carriers of disease. If you have health concerns, please speak to your GP or NHS 111.
Fast-growing numbers. With food, water and shelter, a small group of rats can grow quickly. The longer the route stays open, the more rats can use it.
Noticed any of these signs? Call Manchester Pest Control on 0161 448 1782 and we will talk through what you are seeing and book a survey.
Why DIY rarely stops rats getting in
Many people spend weeks trying to sort rats out first. The reasons it rarely works are consistent.
- The route is out of sight. A drain fault under the kitchen floor or a void behind a bath cannot be seen from inside the room.
- Rats are suspicious. They are wary of new objects and changes, so they often avoid whatever has been put down.
- The source keeps supplying. If rats are coming from a sewer, a neighbouring property or nearby land, removing a few changes nothing.
- Temporary quiet is misleading. Activity can pause for a week and then return.
- Some tasks are not safe or legal for the public. Drain work, working at height and the use of professional treatments all have safety and legal limits. Technicians are trained for them.
What a professional rat survey involves
Our rat control service starts with an investigation, not a guess.
Drain faults are behind many indoor rat problems, which is why surveys include them.The technician inspects inside and out, looking at the evidence in each room, the condition of air bricks and outside walls, and where appropriate the drains. They identify the species, gauge how established the activity is and pinpoint the most likely entry routes. You then get a clear explanation and a treatment plan suited to your home. If there are children, pets or vulnerable people in the house, or you work from home, tell us when you book so the visit and the plan can be arranged around you. Nothing is done without it being explained first.
Rat work almost always includes follow-up visits so progress can be checked. Where the route in needs repair work, such as a drain fault, the technician will explain what they have found so you can arrange it with the right people.
When rats are most likely to move in
Rats are active all year, but certain moments make a move indoors more likely. Autumn and early winter bring colder, wetter weather and fewer easy meals outside, so rats look for warmth and shelter. Building work can disturb an established burrow or open up an old drain, pushing rats towards neighbouring homes. A garden next door being cleared, a business closing and its bins standing empty, or heavy rain flooding parts of the sewer can all trigger the same thing.
If you notice signs shortly after work on your street, a nearby demolition or a spell of flooding, mention it when you call. In Salford we often link rats to older drainage and waterside land; in Sale and Trafford, to gardens backing onto canals and railways. It helps the technician understand where the rats may have come from and which routes to check first.
Frequently asked questions
### How do rats usually get into houses in Manchester?
The most common routes we find are faulty or disused drains, damaged air bricks, gaps where pipes and cables pass through walls, and voids shared with neighbouring properties. Rats can also climb rough brickwork, ivy and drainpipes to reach rooflines. The exact route varies by house, which is why a survey matters.
### Can rats really come up through the drains?
Yes. Brown rats are strong swimmers and live comfortably in sewers. Where an old clay pipe has cracked, a joint has failed or a redundant pipe was never capped, they can reach the ground under a house. Many indoor rat problems in older Manchester streets trace back to a drain fault.
### Why do rats keep coming back after treatment I have bought?
Because the route in is still open and the colony outside is still there. Shop-bought products may deal with a few rats for a while, but they do not find a broken drain or a hidden void. Professional work combines inspection, a planned treatment and follow-up visits so the cause is properly addressed.
### Is it my responsibility or the council's if rats come from the drains?
It depends on where the fault is and who owns that section of pipe. Private drains, shared drains and public sewers are treated differently. A technician can help identify where the problem appears to start, which gives you clearer information when speaking to your water company, landlord or insurer.
### Do you cover rats in Salford and Trafford as well as Manchester?
Yes. We cover the whole of Greater Manchester, including Salford, Sale, Stretford, Moss Side and Rusholme, as well as Stockport and parts of Cheshire. Call 0161 448 1782 and tell us your postcode and what you have noticed, and we will arrange a visit and a quote.
Frequently Asked Questions
How do rats usually get into houses in Manchester?
The most common routes we find are faulty or disused drains, damaged air bricks, gaps where pipes and cables pass through walls, and voids shared with neighbouring properties. Rats can also climb rough brickwork, ivy and drainpipes to reach rooflines. The exact route varies by house, which is why a survey matters.
Can rats really come up through the drains?
Yes. Brown rats are strong swimmers and live comfortably in sewers. Where an old clay pipe has cracked, a joint has failed or a redundant pipe was never capped, they can reach the ground under a house. Many indoor rat problems in older Manchester streets trace back to a drain fault.
Why do rats keep coming back after treatment I have bought?
Because the route in is still open and the colony outside is still there. Shop-bought products may deal with a few rats for a while, but they do not find a broken drain or a hidden void. Professional work combines inspection, a planned treatment and follow-up visits so the cause is properly addressed.
Is it my responsibility or the council's if rats come from the drains?
It depends on where the fault is and who owns that section of pipe. Private drains, shared drains and public sewers are treated differently. A technician can help identify where the problem appears to start, which gives you clearer information when speaking to your water company, landlord or insurer.
Do you cover rats in Salford and Trafford as well as Manchester?
Yes. We cover the whole of Greater Manchester, including Salford, Sale, Stretford, Moss Side and Rusholme, as well as Stockport and parts of Cheshire. Call 0161 448 1782 and tell us your postcode and what you have noticed, and we will arrange a visit and a quote.