Could it be something other than rodents?

Yes, and it is worth checking before any work is done. Squirrels are active during the day. A nest of European hornets or other stinging insects in a wall void makes a humming rather than a scratching. Pipes and ductwork make ticking and popping as they heat and cool. Noise that only happens after dark, with scratching or gnawing, is what fits mice and rats.

Why does the noise stop when I bang on the wall?

Rodents go still when they sense a threat and wait for it to pass. That is why the sound stops for a few minutes and then resumes. It does not mean the animal has left, and it does not tell you where the animal went. The evidence in the cabinets, attic and crawl space is a better guide than the sound.

Do you have to open the wall to deal with it?

Usually not. Rodents travel between the wall voids and the places where they feed and enter, so exclusion and bait placement happen at the entry points and along the routes rather than inside the wall. Opening a wall is rare and would be discussed with you first.

Will a single bait placement make the noise stop?

It can, if the population is small and contained. If the entry points stay open, new animals arrive from outside and the sound comes back within a season. That is why we look at the openings as well as the activity, and why exclusion or the prevention program is often the better fit on rural and semi rural lots.

Rodent Control · Problem Signs

Scratching Sounds in the Walls at Night

The house goes quiet, and something starts moving inside the wall. The timing and the sound narrow down what it is.

What this symptom means

Scratching Sounds in the Walls at Night: Diagnosed and Explained

It starts after the house settles for the night. A light scratching inside the wall behind the bed. A quick scurry across the ceiling. Sometimes a faint, steady gnawing, like a small file working on wood, that stops when you knock on the wall and starts again a few minutes later. It may come from the same spot at the same time each night, or it may seem to move from room to room. Under a house with a crawl space you may hear it beneath the floor instead.

Sound inside a structure is hard to place. Studs, joists and drywall carry it, so a noise that seems to be behind the headboard may be coming from a wall void several feet away, or from the space between the ceiling and the attic floor. That is why we treat the sound as a clue rather than a location.

What the sound does tell you is that an animal is using the voids of the house as a highway. The time of day matters most. Mice and rats are most active in the hours after dusk and before dawn, so noise that starts after dark and stops around sunrise fits rodents. The type of sound helps too. Light, quick scratching and scurrying suggests mice. Heavier movement and louder gnawing suggests rats. Noise during the day, or a steady hum rather than scratching, usually points to something other than rodents, and the inspection sorts that out before any work is chosen.

A Rozier Pest Control & Waterproofing crew inspecting rodent droppings and contaminated insulation in a dirty crawl space.

Catch It Early

What Usually Shows Up With It

A Rozier Pest Control & Waterproofing crew inspecting attic or crawl space insulation damage and cracked wood joist.

Droppings along walls and in cabinets

Rodents leave droppings where they travel and feed. Small dark pellets along a baseboard, in a drawer or on attic insulation confirm the noise is coming from mice or rats and show which part of the house they use.

Gnaw marks on wood, wiring or packaging

Fresh chewing is light colored with clean edges. Marks on the corner of a door, a pantry box, a crawl space vent frame or the insulation on a wire tie the sound to a physical route.

Greasy rub marks and worn paths

Repeated travel leaves dark smudges from fur oil along joists, pipes and the base of walls. In an attic, a trail pressed into the insulation marks the same thing.

Pets staring at or pawing a wall

Dogs and cats hear and smell rodents long before people notice them. A pet that fixes on one spot in a wall or under a cabinet at night is often pointing at the route.

A stale, musky odor in one area

Rodent urine has a sharp smell that builds up in a closed space. A closet, cabinet or section of crawl space with that odor near where the sounds come from usually has more activity than the noise alone suggests.

Most Common Causes

What Usually Causes It

Mice traveling inside wall voids

Mice are the most common source. They climb well, fit through a gap the width of a pencil, and move through the house inside walls, along the top of the sill plate and through the openings around pipes and wires. Their sounds are light and quick, and they often travel the same route at the same time each night.

Rats in the crawl space or attic

Rats are heavier and more cautious. They tend to stay in the crawl space, attic or garage and travel along joists and pipe runs rather than inside living space walls. Their movement is louder, their gnawing is more forceful, and the sound often comes from below the floor or above the ceiling.

Gnawing to open or widen a route

Rodent teeth grow continuously, so they chew to keep them worn and to enlarge an opening they want to use. A steady rasping sound in one spot, night after night, often means an animal is working on a gap around a pipe, a vent or the edge of a sill plate.

Nesting in insulation

Attic insulation, wall batts and the insulation on ductwork in the crawl space make good nesting material. Rustling and scratching that stays in one area, especially above a ceiling, often marks a nest being built or tended rather than an animal passing through.

Something that is not a rodent

Worth ruling out. Pipes expand and contract as they heat and cool, wind moves loose siding and branches, and a nest of stinging insects such as European hornets in a wall void makes a humming rather than a scratching. Squirrels are active in daylight rather than at night. Identifying the animal comes before any decision about what to do.

Electrical wiring and a junction box running along a joist above the insulation.

Rodent Control Solutions for Scratching Sounds in the Walls at Night

Each method is matched to what the inspection finds at your property. Read how each one works and when it is the right call.

Attic and Crawl Space Sanitation

Removing contaminated insulation and nesting material once the animals are gone.

Tamper Resistant Bait Stations

Locked stations hold bait where rodents travel and keep it away from everyone else.

All rodent control solutions

Regional Context

Why the Southern Virginia and Northern North Carolina Climate Changes This Work

Generic advice treats every market identically. Humid summers, wooded lots and a great deal of older housing stock give this region a moisture profile that drives both structural damage and pest pressure, which is why our diagnosis starts with where the home sits and how it is built, not just with the symptom you called about.

Humid summers put water under the house

For much of the year the outside air across this region holds more moisture than the air under a crawl space. That inverts the assumption foundation vents were built on. Warm, humid air enters through the vents, meets the cooler surfaces beneath the floor, and condenses on joists, ductwork and insulation. The vents intended to dry the space are wetting it instead.

That single mechanism explains most of what we are called out for. Damp framing softens and decays. Mold establishes and its odor rises into the living space through the floor. Termites, cockroaches and rodents are drawn to exactly those conditions. Treating the insects without addressing the moisture underneath simply resets the clock.

Wooded and lakeside lots hold moisture longer

Around Lake Gaston and across the forested parts of Mecklenburg, Brunswick, Warren and Halifax counties, shade and tree cover keep soil damp well after the surrounding area has dried. Standing water lingers, foundations stay wet longer after rain, and mosquito habitat persists through more of the season. Properties like these frequently need drainage attention before any treatment is worth doing.

Older housing stock, older construction details

Petersburg and Danville in particular carry a great deal of older housing, and age brings construction details that predate current moisture practice: open crawl spaces with bare soil, wood in direct contact with the ground, original drainage that has silted up, and decades of accumulated repairs. An inspection of a house like that has to read the whole system rather than one symptom.

Why Rozier

A Local, Family Owned Team in South Hill

Rozier is a family owned, faith-driven company based in South Hill. Because moisture is what invites termites and rodents in the first place, real prevention starts below the surface.

One team, above and below the surface.

We treat the infestation and correct the moisture conditions that caused it, instead of handing you to a second contractor.

Every property evaluated for both pest and moisture problems.

Each home we visit is assessed through a pest lens and a moisture lens, because underneath a house they are the same problem.

Inspection before recommendation.

We do not arrive with a predetermined treatment and a timer running. What we propose follows from what we find.

Products chosen with your household in mind.

Children, pets and sensitive family members are part of the decision about what gets used and how it is applied.

Rozier Pest Control & Waterproofing team members in uniform in front of two branded service vehicles

Frequently Asked Questions

Answers to Common Questions About Scratching Sounds in the Walls at Night

Don't see your question here? Our team is happy to help. Reach out anytime.

The sound gives a hint and the evidence gives the answer. Light, fast scratching inside living space walls, with small pointed droppings in cabinets, fits mice. Heavier movement under the floor or above the ceiling, with larger blunt droppings in the crawl space or garage, fits rats. The inspection settles it, and the two call for different placements and different entry points.

Other Rodent Control Warning Signs to Watch For

If you see one, it is worth checking for the others. Most problems show up as more than one symptom.

Illustration of a technician applying an aerosol treatment into the void behind an interior wall.

Rodent Droppings

You open a kitchen drawer, pull a box out of the pantry, or shine a light along the wall of the crawl space, and there are small dark pellets that were not there before. They collect along walls, behind appliances, under the sink, in the corners of the garage, on top of the insulation in the attic, and around stored pet food or bird seed. Mouse droppings are about a quarter inch long with pointed ends, roughly the size and shape of a dark grain of rice, and a single mouse leaves dozens a night scattered along its route. Rat droppings are larger, half an inch to three quarters of an inch, thicker and often blunt at the ends, and tend to be found in groups.

Learn More

Rozier Pest Control & Waterproofing inspecting a crawl space with damp, deteriorating insulation and a crumpled vapor barrier.

Gnawed Wires and Wood

You notice the corner of a garage door or a crawl space vent frame has been chewed to a rough edge. A pantry box has a hole in one corner with shredded cardboard around it. In the attic, the insulation on a run of wiring is stripped back to bare copper in a few places. Under the house, the flexible duct is torn open, or a section of PVC drain line has a ragged gouge in it. In the garage, the wiring under the hood of a car that has sat for a week or two shows the same marks.

Learn More

Service Areas

Proudly Serving Southern Virginia and Northern North Carolina

Rooted in South Hill, we work across both states with the responsiveness of a local team. If your town is not listed, call us. There is a good chance we are already there.

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How It Works

Protection in Three Straightforward Steps

No confusing plans and no pressure. Here is exactly how we get your home protected.

Step 01

Call for a free estimate.

One quick call and we schedule a visit at a time that suits you, at no cost and with no obligation to go ahead.

Step 02

Get a plan built for your home.

We inspect above and below the surface, explain plainly what we found, and recommend only what your property actually needs.

Step 03

We handle the work.

Our team carries out the treatment or the repair, and tells you what to expect afterwards and when we will be back.

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From the Blog

Expert Guidance on Protecting Your Home

Practical articles from the Rozier team on foundation health, waterproofing, and home preservation.

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Illustration of rodent droppings along a wooden joist between insulation batts in an attic.

Pest ControlFeatured

Pest Control

5 Tips to Avoid a Rodent Infestation

Five practical steps to keep mice and rats out: seal entry gaps, trim back vegetation, store food securely, manage trash, and dry standing water.

Michael Wallace·Aug 2, 2026

Illustration of a small tan German cockroach on a kitchen counter beside a much larger reddish brown cockroach.