Rodent Noises at Night: What You Are Hearing
Light scratching in walls at night is usually mice. Heavy running and thumping overhead is usually rats. Daytime noise in the attic points to squirrels or birds.
Call a local technician (254) 276-0111Noises in the walls or ceiling after dark are often the first sign of rodents. The sound itself, the time it happens and where it comes from usually narrow it down. Here is a quick guide to what you might be hearing in a Killeen house.
Mice
Mice make light, quick scratching and scurrying sounds, often inside walls, under cabinets or in the ceiling near the kitchen. Most of it happens at night and early in the morning. It can sound like fingernails on drywall or something small rolling. You may hear gnawing on wood or plastic.
Mice in the walls usually travel between the attic or garage and the kitchen. See mice in the walls.
Rats
Rats are heavier and louder. Running across the attic sounds like quick footsteps, and you may hear thumps, rolling of objects like nuts, and steady gnawing. Roof rats are the usual attic noise in Killeen. Norway rats are more likely heard low in walls, under a pier-and-beam floor or in the garage.
Rats are cautious and most active after dark. If you hear something big overhead every night, read rats in the attic.
Not rodents
- Squirrels: daytime noise, especially early morning and late afternoon, often heavier and in bursts.
- Birds: chirping and fluttering near vents, mostly in spring when they nest.
- Raccoons and opossums: heavy, slow movement, often in the attic or under the house. Call animal control or a wildlife removal company.
- The house itself: ticking and popping as roofs, ducts and pipes heat and cool. In Killeen's summer heat, the attic expands and contracts a lot at sunset.
What Killeen houses add to the mix
Most homes here have the HVAC system and ductwork in the attic. Rodents run along ducts and the platform around the air handler, and the sound carries through the duct runs into rooms far from where the animal actually is. If you hear scratching from a ceiling vent, the rodent may be on the duct nearby, not right above you.
Pier-and-beam houses in older neighborhoods add noise from below. Rats under the floor make bumping and scratching sounds that seem to come from inside the room. A look under the house with a flashlight, from the access hatch, often settles it.
Brick veneer homes carry sound up the cavity between brick and frame. Mice in that space can be heard along an outside wall, especially low near the floor and up near the ceiling where they cross into the attic.
Keep a simple log
Write down the time, the room and whether the sound was high or low for three or four nights. Note whether it stops when you turn on a light or tap the wall. Rodents usually go quiet; squirrels and birds often do not care. That log makes the call to a technician faster, and it helps them decide where to look first: attic, walls, garage or under the house.
When to call right away
- You hear chewing near wiring, or lights flicker in the room with the noise
- There is a burning smell. Call the fire department first
- The noise is in a baby's room or the room of someone who is ill
- You find fresh droppings in the kitchen along with the noise
- You hear something struggling inside a wall or ceiling
For anything on that list, see emergency rodent removal. Same-day appointments are often available.
For everything else, a few nights of notes and a look for droppings is a fine place to start. Most night noises turn out to be mice or roof rats, and both are routine work for a local technician once you know where they are traveling.
How to narrow it down
- Note the time. Night means rodents; day means squirrels or birds.
- Note the place: which wall or ceiling, high or low.
- Look for droppings in the attic, under sinks and in the garage.
- Check the outside for gaps at the roofline and burrows by the foundation.
- Set a few snap traps where you hear the noise, following the CDC placement: on the floor against the wall with the baited end toward the wall.
If you cannot pin it down, an inspection will.
Common questions
- Why do I only hear mice at night?
- Mice and rats are mostly active after dark, and the house is quieter then, so you notice them more.
- Can one mouse make that much noise?
- One mouse can be surprisingly noisy in a quiet house, but if you hear activity in several places, there is likely more than one.
- Is it rats or squirrels in my attic?
- Noise mostly at night suggests rats. Noise mostly in daylight suggests squirrels.
- What should I do first?
- Look for droppings to confirm, then set snap traps along the walls where you hear activity, and call if it continues.