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Not a mouse · Venomous bite · Entry sealing

Shrew Control in South Jersey

Shrews turn up in basements, garages, and window wells, and they are almost always reported as mice. They are not rodents at all, they behave nothing like mice, and the approach that clears a mouse problem will not reliably clear them. Acorn Wildlife handles shrews across South Jersey as part of the same sealing work that keeps everything else out.

Short answer: Shrews are controlled by sealing the small gaps they use and trapping the ones already inside. They do not infest a house the way mice do, because they are solitary insect-eaters that mostly wander in by accident, so a shrew problem is usually a gap problem rather than a population problem.

A northern short-tailed shrew, frequently mistaken for a mouse in South Jersey basements

Shrew or Mouse? They Look Nothing Alike Up Close

Short answer: A shrew has a long pointed snout, tiny eyes you can barely see, ears hidden in the fur, and a short tail. A house mouse has a blunt nose, obvious black eyes, large round ears, and a tail as long as its body. If the cat brought it in and it has a pointed nose, it is a shrew.

The Snout

Long, pointed, and constantly twitching. Nothing like the blunt face of a house mouse. This is the single quickest tell.

Eyes and Ears

Eyes tiny to the point of being hard to find; ears buried in dense velvety fur. Mice have prominent eyes and ears.

The Tail

Short, roughly a third of the body length. A house mouse tail is about as long as the rest of the animal.

Found Dead

Very commonly the first sign, often brought in by a cat and left uneaten. Shrews carry scent glands most predators dislike.

The northern short-tailed shrew is the one we see most in South Jersey. It is worth knowing that it is venomous: its saliva carries a toxin used to subdue prey. A bite to a person is very uncommon and not medically serious, but it is painful and swells more than you would expect, and it is a reason not to pick one up bare-handed.

Why Shrews Are Not a Mouse Problem

Almost everything that makes mouse control work relies on mice being social, curious, and grain-eating animals that live in your building in numbers. Shrews break every one of those assumptions.

They are solitary and territorial, so you are generally dealing with one animal rather than a population. They eat insects, worms, and other invertebrates rather than seed and grain, so ordinary rodent bait stations hold nothing they want. Their metabolism is extraordinary: a shrew must eat constantly and can starve within hours, which is why they so often end up dead in a basement having got in and failed to get out. And they rarely nest indoors at all; they come in through a gap, hunt, and either leave or die.

So a shrew in the house is telling you something specific and useful: there is an opening at ground level big enough for a very small animal. That is a sealing question, and it is the same diagnostic we run for mice and rodents generally.

How Acorn Handles Shrews

Confirm What It Is

Half of this job is identification, because the answer differs so much. A photo of the animal, even a poor one, settles it immediately, and we would rather identify it free of charge than quote the wrong programme.

Find the Ground-Level Gaps

Shrews get in through gaps at grade: unsealed sill plate joints, utility and pipe penetrations, gaps under doors and garage thresholds, foundation cracks, and uncovered window wells. Window wells in particular act as pit traps, which is why so many shrews are found in basements directly below one.

Seal, Properly

Gaps are closed with material that holds: steel mesh and appropriate sealants rather than foam on its own. This is the same exclusion work we do for every other species and carries the same warranty, with the useful side effect that sealing for shrews seals for mice at the same time.

Remove What Is Inside

Anything already indoors is trapped out. Because shrews are insectivores, standard rodent baits are not the tool, and because they starve so quickly, leaving one to wander usually means finding it dead somewhere inconvenient. If that has already happened and you cannot find it, our dead animal removal service covers it.

The Honest Note

Shrews are genuinely beneficial animals outdoors, eating large numbers of insects, slugs, and grubs, and a healthy shrew population in the garden is doing you a favour. We are not trying to eliminate them from your property, only from the inside of your house.

Shrew Control Near You

Shrew FAQs

Is it true that shrews are venomous?
For the northern short-tailed shrew, yes. Its saliva contains a toxin that subdues prey, and a bite is painful and swells noticeably. It is not considered medically dangerous to people and bites are rare, because shrews bite only when handled. The practical rule is simple: do not pick one up with bare hands, alive or dead.
Why does my cat keep bringing them in and not eating them?
Shrews have scent glands that most predators find unpalatable, so cats routinely catch them and then abandon them. It is one of the most common ways homeowners first meet one. It also tells you there are shrews active immediately around the house, which is normal and not in itself a problem.
Will mouse bait get rid of them?
No, and this is the central practical point. Shrews eat insects and invertebrates, not grain, so rodent bait offers them nothing. People often conclude their mouse programme has failed when really they never had mice. Identification first, then trapping and sealing.
Do shrews breed in the house like mice?
Very rarely. They are solitary and territorial and do not form indoor colonies, so a shrew indoors is usually one animal that got in through a gap rather than evidence of an infestation. That is genuinely good news, and it is why the work focuses on the opening rather than on population control.
I keep finding dead ones in the basement. Why?
Because shrews must eat almost constantly and can starve within a matter of hours. One that gets into a basement and cannot find its way out does not last long. The recurring part is the entry point, and usually an uncovered window well feeding them in. Call or Text (856) 398-1028 and we will find the gap.

Pointed Nose, Tiny Eyes, Found in the Basement?

Free identification from a photo, the ground-level gaps found and sealed, and the same warranty as the rest of our exclusion work.

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