Sound diagnosis · No poison · Warrantied sealing

Scratching in Your Walls? Here's What It Usually Is

A noise inside a wall feels closer and creepier than the same noise in an attic, and it usually means the animal is using your wall cavities as a highway between the attic or crawl space and the rest of the house. Acorn Wildlife diagnoses wall noises by sound and location, retrieves animals that are stuck, and seals the routes they travel. Here's how to read what you're hearing.

Short answer: Wall scratching is usually mice or rats at night, a squirrel at dawn and dusk, or a young animal that fell into the cavity and can't climb out. Acorn Wildlife identifies the animal by sound and schedule, removes it humanely without poison, and seals the exterior entry points so the walls stay quiet.

Mice and Rats

Light scratching, gnawing, and pattering along the same route night after night, usually starting an hour after the house goes quiet. Rodents run wall cavities like hallways between the basement and attic.

Squirrels

Loud, urgent scrambling at dawn or dusk, often from one fixed spot. A squirrel that fell down a wall cavity can't climb smooth drywall back out, and the noise gets more desperate over a day or two. That one is a same-day call.

Raccoons

Slow, heavy shifting and thumping, usually between a ceiling and the floor above rather than a true exterior wall. In spring, faint chittering can mean kits stashed in the cavity by their mother.

Birds and Bats

Fluttering, wing-buffeting, and faint scratching high on the wall in summer, usually behind a vent or at the roofline. Chimney noises are their own case: see our animal in the chimney page.

This is the single most common way a cheap fix becomes a much bigger bill, and we see it every month. The bait works exactly as designed: the rodent eats it, gets slow and dehydrated, and retreats somewhere safe to die. Somewhere safe means your wall cavity, your subfloor, or the middle of your insulation. Now there's a decomposing animal you can smell but can't see, flies finding it before you do, and drywall that needs to be opened to get it out. We cover that whole process on our dead animal removal page.

There's a second honest reason: poison doesn't fix anything. The entry points are still open, and the next rodents move in on the same routes. Trapping plus sealing is the only combination that actually ends the noise. It's more work upfront, and it's the only version of this job we're willing to warranty.