Bat Removal & Exclusion in Corning, NY

Bats in your Corning home

In Corning the classic bat house is a glass-town double. Two households share one long attic void divided — sometimes only partly — by a party wall that stops at the ceiling joists instead of the ridge. Big brown bats and little brown bats slip in at a gable or chimney gap on one end and roost the length of the building, emerging over Market Street rooftops at dusk to feed above the Chemung. Owners on both sides may notice droppings, a faint musky odor, or nothing at all until a bat appears in a bedroom.

Everything about our bat work is exclusion and timing, guided by operator practice rather than a printed calendar. Colonies raise pups that cannot fly for part of summer, so exits are never sealed while flightless young are inside. In cold weather, bats may be hibernating in the roost and must not be disturbed. Autumn, when young are flying and the colony still leaves nightly, is the prime working window. Before any valve is fitted we identify the species, because Indiana bats and northern long-eared bats are endangered, the tri-colored bat is proposed for listing, and a listed roost changes the job completely.

Shared attic voids in doubles change the survey completely

Excluding bats from one half of a Corning double without surveying the whole building invites failure. If the party wall does not seal to the ridge, bats blocked at one gable can move laterally and exit — or become trapped — over the neighboring unit. We inspect the full roofline, both gables, and the interior void where access allows, and we coordinate timing so the entire colony has one clear, humane route out. Homeowners are sometimes surprised the job involves the neighbor roof edge; in a twin, that edge is functionally part of the same roost system.

Species identification comes before valves, every time

Most Corning attic colonies prove to be big browns, with little browns also common. That conclusion has to be earned, not assumed. Guano size, roost location, exit counts, and where needed closer examination by our crew separate the routine house bats from protected species. Indiana and northern long-eared bats favor caves, mines, and trees far more than houses, and tri-colored bats are uncommon in buildings, but rarity is not permission to skip the check. If evidence pointed to a listed bat, we would stop, leave the roost undisturbed, and follow DEC direction.

Flood-era junctions give bats a menu of pencil-wide entries

Bats do not need a hole; they need a slit. Corning post-flood additions, re-sided walls, and replacement trim created long runs of junction — old clapboard under new siding, a newer roof tying into an older gable, flashing replaced in sections. Any of those lines can hide a gap wide enough for a bat and invisible from the sidewalk. Our sealing list therefore runs by the linear foot, not by the obvious hole, and dusk exit watches confirm which of the many candidate gaps the colony actually uses each night.

Guano under a shared roost: what stays, what goes

Droppings accumulate fastest under the favored roost beam, and in a double that beam may sit above the quieter household. We assess depth and whether material has saturated insulation or ceiling board. Light, recent scatter may need only careful cleanup with respiratory protection and no dry sweeping into household air. Deep, long-term deposits usually mean removing contaminated insulation in the affected bay. We explain the finding plainly before work starts, because guano remediation is the part of a bat job most likely to surprise an owner who expected only a valve and some caulk.

A bat in a bedroom is handled differently from a bat in an attic

If a bat is flying in living space, close interior doors to confine it, keep people and pets out of that room, and call us — do not swing towels or try to catch it in a container yourself. Bats are a rabies-vector species in New York. Anyone who slept in a room with a bat, or a child or pet who may have had contact, should also speak with a physician or the county health department about possible exposure. Attic colonies that never enter living space are a building job; a bedroom bat is a health question first.

What a proper autumn exclusion looks like, night by night

First every secondary gap is sealed while the colony is out feeding, leaving only the confirmed main exits open. One-way valves are then fitted at those exits. That evening the bats leave normally; returning, they find a flap that will not admit them and eventually settle at an alternate roost. We monitor exits over several nights until counts reach zero, then remove the valves and seal the final gaps in durable material. Done in the right season, the colony relocates intact and the building — both halves of it — stays bat-free.