Can I hear mice talking to each other?

Mostly no. Their main vocalizations are ultrasonic, in the 30–110 kHz range, well above the roughly 20 kHz ceiling of human hearing, according to peer-reviewed research (Holy & Guo, 2005) reviewed in the Journal of the Acoustical Society of America. That means the bulk of mouse-to-mouse communication happens completely outside human perception, day or night. What you hear — scratching, scurrying, and occasional audible squeaks — is only a small, incidental fraction of their actual activity.

How do I tell mouse noise from rat noise?

Mice make light, fast scratching, scurrying, and faint, high-pitched squeaks. Rats make noticeably heavier, louder scrambling and gnawing, and sometimes thumps or a grinding sound as they wear down their teeth. Location matters too: light noise high in a wall or ceiling is more likely mice, while heavier noise low along the floor or in a basement is more consistent with rats.

Why does the scratching seem to move around the wall?

Because mice feed in roughly 200 small meals across a single night rather than one sitting, their movement inside a wall cavity is nearly continuous. That constant activity, combined with mice traveling along studs, pipes, and wiring to reach different parts of the house, is why the noise can seem to shift location over the course of an evening rather than staying fixed in one spot.

Is occasional nighttime noise normal in an old house, or is it mice?

Houses do settle, but that noise is typically a single creak, not recurring scratching, gnawing, or squeaking from the same spot night after night. Because mice are active mostly after dark and feed in roughly 200 small meals a night, their movement produces a pattern — repeated activity at similar times — rather than a one-off sound. Recurring, patterned noise, especially paired with droppings or gnaw marks, points to active rodents and is worth investigating rather than dismissing.

Daniel Brady · NH-Licensed Pesticide Applicator · License #782664

|Reviewed by Daniel Brady

What Noises Do Mice Make at Night?

Homeowners usually notice mice by sound before sight. UC IPM notes mice are active mostly at night, and audible signs include light scratching and scurrying, gnawing, and thin squeaks. What most people don't realize is that mice communicate primarily through ultrasonic vocalizations between 30 and 110 kHz, according to peer-reviewed research — far above the roughly 20 kHz limit of human hearing, so the squeaking you hear is only a small slice of their actual "chatter." Because mice feed in roughly 200 tiny meals a night, their movement is near-constant rather than a single event, which is why scratching seems to travel around a wall cavity. Rat sounds, by contrast, are noticeably heavier and louder.

At a Glance

Short answer: Light scratching, scurrying, gnawing, and occasional squeaks — most of their sound is ultrasonic and inaudible.
Key fact: Mice communicate mainly at 30–110 kHz, well above human hearing (~20 kHz max).
NH relevance: Wall and ceiling noise reports climb in NH after the fall entry period around the first hard frost (~Oct 19).
Action needed: Recurring noise from the same wall or ceiling area, especially with droppings nearby, confirms active rodents worth investigating.

The honest answer

The short of it

The verdict

Light scratching, gnawing, and squeaks — plus sound you can't hear

At night, mice typically produce light scratching, scurrying, gnawing, and occasional high-pitched squeaks from inside walls, ceilings, and behind appliances. Peer-reviewed research shows most mouse communication is actually ultrasonic (30–110 kHz), well above the roughly 20 kHz ceiling of human hearing, so what you hear is only a fraction of their real activity. Rat noises are noticeably heavier — louder scratching, scrambling, and sometimes thumps.

Key Numbers

What Noises Do Mice Make at Night — By the Numbers

30–110 kHz

Frequency range of mouse ultrasonic vocalizations

~20 kHz

Upper limit of human hearing

~200

Small "nibble" meals a mouse eats per night

Nocturnal

Mice are active mostly after dark

Deep Dive

The full picture

Mouse noise has a distinctive character once you know what to listen for — and understanding it helps homeowners tell a real infestation from an old house settling.

What you can actually hear

UC IPM notes mice are active mostly at night, and the audible signs are light scratching and scurrying (small feet on wood or drywall), gnawing — a persistent scraping sound as they chew — and occasional thin squeaks. Because mice feed in roughly 200 small "nibble" meals across the night, movement is near-constant rather than a single event, which is why the scratching can seem to travel around a wall cavity over the course of an evening.

The sound you mostly can't hear

What most people don't realize is that the bulk of mouse vocal communication is ultrasonic. Peer-reviewed research (Holy & Guo, 2005, cited in a PMC review) documents that mice "predominantly communicate using ultrasonic vocalizations (USVs) with a frequency from 30 to 110 kHz" — well above the roughly 20 kHz ceiling of human hearing. So the audible squeaks you notice are only a fraction of the actual communication happening in the wall.

Telling mouse noise from rat noise

Sound location and weight are useful diagnostics. Rats produce noticeably heavier sounds than mice — louder scratching, scrambling, gnawing, and sometimes thumps or a tooth-grinding noise — while mouse sounds stay light and fast. High ceiling or attic noise suggests climbing rodents in wall voids or above the ceiling; low, along-the-floor sounds point to ground-level travel.

Bottom line — Expect light scratching, scurrying, gnawing, and occasional squeaks from mice, with most of their real communication inaudible to humans. Recurring noise from the same wall or ceiling area, especially alongside droppings, confirms active rodents and calls for inspection, not a shrug.

Same wall, same scratching, every night?

That's not the house settling — it's an active mouse nest close by. Anchor's licensed NH technicians find it and clear it.

Get a Free Mouse-Control Inspection (603) 785-0118

Local Context

Why this matters in New Hampshire

Wall and ceiling noise reports climb across southern and central NH after the fall shelter-seeking period around Manchester's first hard frost — about October 19 (50%) to October 29 (80%), NOAA 1991–2020 — as outdoor mice move indoors for the winter.

Key local data

NH DHHS: no confirmed hantavirus case acquired in New Hampshire to date; the deer mouse (Peromyscus) is the regional reservoir species.

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Daniel Brady

NH-Licensed Pesticide Applicator · License #782664 (NHDAMF, RSA 430)

Daniel Brady is the New Hampshire–licensed applicator behind Anchor Pest Services, a family-owned pest control company serving the Manchester area since 2017.

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Professional Rodent Control

You're Only Hearing Part of the Activity

Most mouse communication is ultrasonic — the scratching you do hear is a fraction of what's happening in your walls. Anchor Pest Services inspects, traps, and seals entry points so the noise actually stops. Family-owned since 2017, NH license #782664.

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Keep Exploring

What Noises Do Mice Make at Night?

The short of it

What Noises Do Mice Make at Night — By the Numbers

The full picture

What you can actually hear

The sound you mostly can't hear

Telling mouse noise from rat noise

Same wall, same scratching, every night?

Why this matters in New Hampshire

Frequently asked

You're Only Hearing Part of the Activity

Your next step

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