Short answer: light scratching and scurrying that starts after dark, in a Buffalo house, is mice until proven otherwise. Heavier, slower thumping is more likely a rat. Noise in the daytime, especially around dawn, is often a squirrel, which is a different animal and a different trade. The pattern of the sound tells more than the sound itself.
Three questions sort most cases. When? Mice and rats work at night; squirrels work the day shift and are loudest early. How heavy? A mouse sounds like light scratching and quick runs, almost like fingers drumming. A rat is slower and deliberate, with gnawing you can sometimes hear through the wall. Where? Sounds that stay in one ceiling corner point at a nest. Sounds that travel a wall from basement to attic are a route, and in Buffalo's balloon-frame houses that route is an open stud bay with an animal in it.
Our mice vs rats guide compares the two animals sign by sign. Sound is one sign. Droppings are the one that settles arguments.
Buffalo's pre-war houses were framed with studs that run unbroken from the foundation to the attic. That open bay is a highway: an animal that enters at the sill can be in the attic without ever crossing a room, and it scratches, climbs and drops things inside the wall on the way. Postwar houses give the same effect through plumbing and wiring chases. This is why the wall that makes noise is rarely where the animal got in, and why treating the noisy room alone does not end it.
An inspection names the animal, the scale of the problem and the entry points, with the price for each part in writing.
Call when the sounds come from more than one wall, when droppings show up in living space, when you hear gnawing near wiring, or when the noise has run for more than a couple of weeks: by then there is usually a nest, not a visitor. The inspection identifies the animal from the evidence and maps the route, and if it turns out to be a squirrel we will tell you so plainly, because that is wildlife work, not ours. If the animal is loose in the house or the gnawing is on electrical cable, treat it as the emergency it is and call the same day.
Yes. Squirrels are the common one in Buffalo attics, and birds occasionally get into a chimney or a wall void. Plumbing can tick and knock as pipes expand. The pattern separates them: animal noise moves, repeats at animal hours, and leaves droppings somewhere. Pipe noise follows water use and leaves nothing.
Maybe, and maybe not. A sound can stop because the animal died in the wall, moved its nest, or because a seasonal route changed. If droppings were ever part of the picture, an attic and basement check is still worth it before you decide it ended.
Not as a first move. Animals are almost never caught by opening the wall they were heard in, and you get a drywall repair either way. The entry point and the route matter more than the noisy spot, and both are readable from the attic, the basement and the outside of the house.
Call now and tell us what you are seeing. We will walk you through the next step and get an inspection set up.
Sounds in the walls, droppings in the wrong place, a smell that will not air out. The inspection names the animal and the entry points before you spend anything on treatment.
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