← Identification guide

Identifying Droppings in Your Attic, Garage, or Soffit

Droppings are the most reliable evidence in an attic, because each animal leaves a different size, shape, and pattern. Do not sweep or vacuum them dry — that puts the contamination into the air you breathe.

Most likely suspects

Roof rats

Most common find

Dark pellets about a half-inch long with pointed ends, scattered along walls, on top of insulation, and in pantry corners. Dozens to hundreds of them.

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Squirrels

Common

Similar size to rat droppings but rounder and blunt at the ends, usually lighter in color and clustered near a nest rather than trailed along runways.

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Raccoons

Common

Large, tube-shaped, dog-like segments with visible seeds or berry hulls, deposited in one repeated latrine spot in the attic.

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Bats

Common

Crumbly pellets that break into shiny insect-wing flecks, piled in a cone directly beneath one entry point or below a roost.

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The pattern matters as much as the pellet

Rodents leave droppings everywhere they travel, so you find them trailed along beams and wall lines. Raccoons use a single latrine and return to it. Bats drop straight down, so the guano forms a pile under the roost or outside beneath the gap they use. Squirrel droppings concentrate around nesting material. That pattern tells us where the animal is living and where it gets in.

Real health risks in the dust

Rat and mouse urine and droppings carry leptospirosis and salmonella; raccoon feces can carry roundworm eggs that stay viable for years; bat guano supports histoplasmosis spores. Dry sweeping aerosolizes all of it. Contaminated insulation should be removed and the space sanitized rather than cleaned up dry with a shop vac.

What we do about it

After the animals are out and the structure is sealed, we remove soiled insulation, treat and deodorize the affected area, and can install fresh insulation to restore your attic's R-value. Cleanup without exclusion just means doing it again next season.

Common questions

Are old droppings still a problem if the animal is gone?

Yes. Roundworm eggs and histoplasmosis spores persist in dry material long after the animal leaves, and the odor keeps attracting new animals to the same entry point.

Can you tell how long they've been there?

Fresh droppings are dark and soft; old ones are gray, dusty, and crumble. On the inspection we use that plus rub marks and nest condition to judge how established the infestation is.

Do you handle the cleanup, or just the animal?

Both. Removal, structural sealing, contaminated insulation removal, sanitizing, and deodorizing are all part of the job.

Not what you're seeing?

Open 24/7 across Hillsborough, Pasco, Pinellas, Hernando, Polk counties. Describe what you're hearing or seeing and we'll tell you what it is.