Smudges on surfaces from the pests oily fur.
Roof rat sounds.
You could also hear a scurrying noise as they move quickly across your attic.
You might hear scratching and gnawing as they crawl around or chew on your walls and wires.
How to catch a rat in the attic.
Gnaw marks on wood trim wires and other household items.
If you hear scratching sounds in the attic it s because roof rats like to create nests.
Signs of roof rats around the house include.
Rats on the roof is never a good sign and while they may not be as noisy or as easy to spot as raccoons or larger animals spotting a rat on the roof is definitely a sign to be concerned about.
You can also hear running and scratching sounds as they go about your business in your attic or ceiling.
Noises coming from attics and walls just after dusk.
Wheezing is a common sound you might hear if your rat has the start of an upper respiratory infection or is experiencing a mycoplasma attack.
When they re in your attic mice and rats make several sounds.
The noise can sound light or it can actually sound surprisingly loud.
If wheezing is the result of mycoplasma it should go away on its own within 48 hours.
Remnants of nests in attics cabinets and other areas above the ground.
Getting rid of the animals can be quite a challenge particularly if the roof and the attic space inside is difficult or awkward to get to but it is.
Most people describe it as a whistling noise that occurs alongside their rat s breathing.
Chirps and squeaks are also common in mice but rats usually communicate at a pitch that humans cannot hear.