Rat Control — Duxford

Rat Droppings or Mouse Droppings? How to Tell the Difference in Duxford

People want to know how many animals they have. Droppings will not tell you that — but the quantity still tells you something worth knowing.

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Rat entry hole gnawed around a service pipe where it passes through a wall, with droppings and gnawed debris below it

The question behind this one is almost always the same: how bad is it? That is a fair question and it deserves an honest answer about what the evidence can and cannot support.

What Quantity Cannot Tell You

It cannot tell you how many animals there are. Nobody can count a population from its droppings, and anybody who gives you a number from the doorstep is guessing at your expense. Output varies with what they are eating, how long they have been there and how much of the area you have actually looked at.

We will tell you the activity is light, moderate or heavy, and where it is concentrated. We will not tell you there are eleven rats.

What It Can Tell You

Brown rat emerging from a gnawed hole at the base of a brick and render wall, with droppings on the concrete floor beside it
What you findWhat it reasonably supports
A handful, in one place, all looking oldHistoric activity. Worth confirming, not necessarily worth treating
A handful, fresh, on a clear routeCurrent activity, probably small numbers
A steady accumulation in several placesEstablished activity, and more than one animal
Heavy accumulation in one spotHarbourage nearby, or a route used constantly over a long period
Fresh droppings appearing daily after you clear one areaCurrent and ongoing. This is the most useful test you can run yourself
Very large numbers, widely scattered, small sizeMice rather than rats. Mice produce far more than people expect
The one test worth doing yourself. Clear one small area completely, note the date, and look again in three or four days. What comes back, and how much, tells you whether the activity is current far more reliably than the total quantity does. Do that in one place only, and leave the rest undisturbed so the pattern survives.

Rat or Mouse, From Quantity Alone

There is a rough rule that holds up. Mice produce a great many small droppings; rats produce fewer, much larger ones. So a kitchen cupboard with dozens of tiny dark grains in it is almost certainly mice, and half a dozen large tapered droppings along a garage wall is almost certainly a rat.

Where it gets ambiguous is a small number of medium-looking droppings, and that is where size and shape settle it: a rat dropping is roughly 12 to 18mm and tapered, a mouse dropping 3 to 6mm and pointed at both ends.

What Matters More Than the Count

  • Are they fresh? Dark and pliable, or grey, dry and crumbling
  • Where are they? A route, or scattered through an enclosed space
  • Is it indoors? Which decides urgency more than quantity does
  • Is there other evidence? Smear marks, gnawing, runs, burrows, noise
  • How did they get there? Which is the question that decides whether this recurs

Common Questions

Can you tell how many rats I have from the droppings?
No, and nor can anyone else. We can tell you whether the activity is light, moderate or heavy and where it is concentrated. A specific number would be a guess.
How can I tell if the activity is current?
Clear one small area completely, note the date, and check it three or four days later. What comes back tells you more than the total quantity does.
Does a lot of droppings mean rats?
Usually the opposite. Mice produce far more, much smaller droppings. A large quantity of small dark grains points at mice; fewer, larger, tapered droppings point at rats.
What do old droppings look like?
Grey, dry and crumbly rather than dark and pliable. Old droppings mean historic activity, which is worth confirming but not always worth treating.

Rat Control in Duxford

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More on Rat Control in Duxford

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

Rat Control Across Cambridgeshire

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

Rat 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.