How to Tell if You Have Rats: Signs, Sounds and Droppings

Most people first suspect rats because of a noise. A scratching in the ceiling at night, a scurrying behind the kitchen units, or a thump from the loft that is too heavy for a mouse. Sometimes it is a sighting in the garden at dusk that makes you look more closely.

Noises alone can mislead, as squirrels, birds and even central heating pipes make similar sounds. This guide walks through the physical evidence rats leave behind, so you can judge what you are dealing with before deciding what to do.

Droppings: size, shape and where they turn up

Rat droppings are larger than mouse droppings, usually a bit bigger than a grain of rice, blunt or slightly tapered at the ends. Fresh ones look dark and shiny and feel soft. Old ones turn grey and crumble.

Look along walls, behind appliances, inside cupboards under the sink, on loft joists and near bins or compost heaps outside. Rats tend to leave droppings in clusters along regular routes, not scattered thinly.

• Dark, glossy droppings suggest recent activity
• Dry, dusty, grey ones are probably old
• Never sweep or vacuum them dry; wear gloves and wash hands afterwards

Marks that show where they travel

Rats are creatures of habit and follow the same paths daily. Their fur carries grease and dirt, so repeated runs leave smear marks along skirting boards, pipes and the base of walls. You may also notice a musky, stale smell in a closed space such as an airing cupboard or under decking.

Outside, look for worn tracks through long grass or along the foot of a fence, and for holes about the width of a tennis ball beside sheds, patios, drains or compost bins. Burrows with smooth, polished entrances are a strong clue.

Gnawing and damage

Rats gnaw constantly to keep their teeth in check. Fresh gnaw marks look pale and clean on wood, plastic pipes, insulation and cable sheathing. Chewed wiring is the one to take seriously, as it can create a fire risk, so if you find it, consider having an electrician look at the circuit.

Check food packaging too. Torn cereal boxes, gnawed bags of pet food and half-eaten items in a garage or utility room are common finds, and rats will also drag food away to hide it.

Sounds and sightings

Rats are mostly active at night. Scratching, scampering and gnawing in roof spaces, wall cavities or under floors, often around dusk or in the small hours, is typical. Squeaking and fighting noises can also happen.

Seeing one in daylight does not always mean a huge problem, but it can suggest a busy or established population competing for food. A single dead rat is worth noting too, especially if you have not put anything down.

What to do once you suspect rats

Take photos of anything you find, note where and when you hear noises, and keep pets and children away from droppings and suspected nesting spots. Secure food in hard containers and tidy anything outside that offers a meal.

Resist the urge to lay traps or bait yourself, as this risks harm to pets, children and wildlife and can push rats deeper into the structure. A proper inspection from a pest controller finds how they are getting in and where they are nesting. Essex Pest Solutions can carry out that inspection and advise on the right approach for your property.

Frequently asked questions