Mice Control — Duxford

Scratching in the Walls at Night in Duxford: Could It Be Mice?

Five things commonly make a noise in a building, and one of them means no work should happen at all until somebody has taken advice.

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A noise on its own supports several answers, and they lead in completely different directions — different treatments, different trades, and in one case a legal obligation.

The Five Candidates

SoundTimeOther evidence
MouseLight, fast scratching in short bursts, often higher upAfter darkDroppings 3–6mm pointed at both ends, small neat gnawing, shredded nesting material, musky smell
RatHeavier, lower, purposeful movement along a line; sustained gnawingAfter darkDroppings 12–18mm and tapered, coarse gnawing, greasy smear marks, burrows outside
SquirrelHeavy, confident, thumps and rolling soundsDaylight, quiet at nightDamage at the roofline, torn insulation, gnawed cable, seen on the roof
BirdsFluttering and scratching, cheeping in seasonDawn onwardsNest material at the eaves, birds seen entering, droppings below the entry
BatsFaint scrabbling and squeakingDusk and before dawnDroppings that crumble to a glittery powder, in a pile under one point. No gnawing at all
The bat one stops the job. All bat species are legally protected. If the droppings crumble to a dry glittery powder rather than squashing, sit in a pile beneath a single fixed point rather than scattered along a route, and there is no gnawing anywhere, then nothing should be treated, blocked or cleared until it has been properly advised on. We would rather lose a booking than get that wrong.

And a Sixth: Not an Animal at All

  • Pipework expanding and contracting, which ticks and taps and coincides with the heating
  • Timber moving as a building warms and cools
  • A loose vent, tile, aerial or downpipe in wind
  • Water hammer in the plumbing
  • A trapped insect in a light fitting or behind a wall panel, which sounds far larger than it is

How to Narrow It Down Yourself

  1. Log the times over four or five nights. Time of day is the strongest single clue.
  2. Judge the weight. Something you could pick up, or something small and fast?
  3. Knock on the wall. An animal goes quiet and resumes; a building does not react.
  4. Go and look for evidence in the corresponding part of the building, and outside at the wall or roofline below it.
  5. Photograph anything you find with something for scale.

Why Guessing Is Expensive

  • Treating the wrong species is a treatment paid for and a problem still there
  • Blocking a hole on a guess can seal an animal or dependent young into the structure
  • Acting on a protected species is a serious matter rather than a wasted visit
  • Doing nothing where it is a rodent lets a small problem become an established one

Where it is genuinely unclear, a pest inspection and survey is a fixed cost and identifies what is present before you commit to anything.

Common Questions

How do I tell what is in my walls or roof?
Time of day and weight do most of the work. Mice and rats are nocturnal; squirrels are active in daylight; birds are loudest at dawn; bats are heard at dusk. Then go and look for the physical evidence.
What if it turns out to be bats?
Then nothing is treated, blocked or cleared until it has been properly advised on. All bat species are legally protected.
Could the noise not be an animal at all?
Frequently. Pipework and timber moving with the heating, a loose vent or tile in wind, and water hammer all get mistaken for animals.
Why does it matter which one it is?
Because treating the wrong species wastes the money, blocking a hole on a guess can seal an animal in, and acting on a protected species is a serious matter.

Mice Control in Duxford

Tell us what you have found and where. We confirm the treatment and the price before anything is booked.

More on Mice Control in Duxford

The service page for Duxford, the other advice for this area, and every price we charge.

Mice Control Across Cambridgeshire

The main Mice Control Cambridge page covers the service in full.

Mice Control in Duxford

Tell us what you have seen and where, and we will give you the treatment and the price before anything is booked.