Gray squirrels by day, flying squirrels by night
Two animals produce almost every attic call in the District, and they behave nothing alike. The eastern gray works in daylight, sounds heavy, and usually enters through one main opening it has widened over time. You hear it at sunrise and again in late afternoon. The flying squirrel is the Mid-Atlantic winter attic colony problem. It is strictly nocturnal, it nests in groups, and it can slip through a gap a gray squirrel would never fit. Penn State Extension lists two flying squirrel species in the typical eastern set, and a single opening can serve a dozen animals. That difference changes the removal plan. A gray squirrel may be out through a one-way door in a few days. A colony leaves over successive nights, so the door stays longer and the crew has to be patient about closing the last hole. Anyone quoting work in Washington, DC should say out loud which of the two they think you have and why.
A month-by-month view of squirrel season in the District
December and January set up the year. Breeding starts in mid-December or early January, and with overnight lows near 28 degrees a warm attic is the most attractive den within a block. February and March are the loudest weeks. Young are moving, adults are hauling nesting material, and this is exactly the wrong time to close a hole without an inspection. April and May are the clean working window in the first half of the year. The first litter has dispersed, the second has not arrived, and a crew can do exclusion without leaving anything behind a wall. June brings the second breeding period, and by July and August pups are present again while 89 degree afternoons make the attic unbearable and push animals toward shaded cavities. September through November is caching and shelter season, when squirrels probe every softened trim board before winter. If you want one month to schedule permanent repairs, aim for a dry stretch in spring or fall rather than the week the noise starts.
What a proper inspection covers
You are paying for a count, not an opinion. A thorough inspector circles the whole building on a ladder rather than checking only the wall beneath the noise, and works through fascia corners, soffit ends, gable and attic vents, chimney flashing, parapet caps, roof to wall junctions, and the seam where an addition ties into original framing. Every opening should be photographed and numbered. That list is what makes a quote reviewable later, and it is what tells you whether a low bid is cheap or merely incomplete. In the attic the inspector is looking for nests, latrine areas, chewed wire jackets, and worn trails through the insulation. Finding a colony or a litter changes the schedule immediately. By the end you should have a written scope: which opening receives the door, what covers each of the others, whether insulation is coming out, and the date someone returns to pull the door and finish the last repair.
What sets the price on a squirrel job
This work is quoted by scope, so two houses with identical noise can get very different numbers, and both can be fair. The biggest driver is how many openings have to be permanently closed. Each one needs its own material, its own fit, and its own ladder set, so a roof with several weak spots is a full day of work where one chewed corner is an hour. Second is what is living up there. A nursing litter means hand removal and another trip, and a flying squirrel colony means the exit doors stay up longer before anything is sealed. Third is cleanup. Removing soiled insulation, sanitizing, and blowing new material back in is separate trade work, and some quotes include it while others raise it afterward. Roof height and access matter too, and so does rot, since metal fastened to soft wood will not hold. Ask how many follow-up visits are covered, then get the quote in writing after an inspection with removal, exclusion, and cleanup broken out.
When squirrel noise becomes an emergency
Most of this can wait for a scheduled inspection. Three things cannot. Chewed wiring is first. Bright copper showing through a jacket, a scorched smell near a fixture, or a circuit that acts up while you hear movement overhead deserves an electrician alongside the wildlife company, and it deserves the same day. A strong rotting odor with flies is second. That usually means an animal died inside a wall, a soffit, or a ceiling cavity, and the only fix is opening it up and taking the carcass out. In a humid Washington, DC summer this becomes obvious within a day or two. Third is an animal loose inside the living space. Close the interior doors, open one exterior door, and step out of the room so it can find its way. Chasing a squirrel makes it defensive, and anyone bitten or scratched should speak with a doctor. Everything else buys you time to write down when the noise starts and where it moves.