What Is In My Attic? Identifying the Animal by the Sound It Makes

Start with the clock, not the noise

The single most useful piece of information is when you hear it. Squirrels are active at dawn and again before dusk and go silent overnight. Rats and mice run mostly after dark, often picking up once the house goes quiet. Raccoons are heavy and nocturnal, and you will usually hear them arrive in the evening and leave before sunrise. Bats are the quietest of the four, and the giveaway is often a rustle at dusk rather than anything obvious in the middle of the night.

Then listen to the weight

Light, fast scratching that changes direction quickly is almost always a rodent. A slow drag, a thump, or something that sounds unmistakably like a person moving a box is a raccoon. Rolling sounds, as though something is moving a nut or a ball across the ceiling, are a classic squirrel signature. If it sounds like it could be a cat, it is probably a raccoon or an opossum.

Check the outside of the house in daylight

Walk the perimeter and look up. Squirrels chew neat round holes at the corners of fascia boards and gable vents. Raccoons tear rather than chew, so look for lifted shingles, a pushed-in soffit panel or a bent roof vent. Bats leave dark greasy staining around a gap that may be no wider than your finger. Rodents leave rub marks and often use a gap where a pipe or cable enters the wall.

Why guessing wrong is expensive

Every one of these animals needs a different approach and a different legal footing. Bats are protected and have a maternity season during which exclusion cannot be done. Raccoons in spring are almost always mothers with a litter, and trapping the female alone leaves the young to die in your insulation. Sealing a hole with squirrels still inside sends them through your drywall. This is the main reason a wrong identification tends to cost more than the original job.

What to do tonight

Do not block the hole yet. Do not put poison in the attic. Keep pets out of the space, note the times you hear activity, and if you can safely do so, photograph any hole you find from the ground. Then call (833) 652-6912 and describe the timing and the weight of the sound. That is usually enough for us to tell you what you are dealing with before we arrive.

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