Bat Removal & Exclusion in Cumming, GA

Bats in your Cumming home

Big water means big insect hatches, and Lake Lanier feeds a lot of bats. On a warm evening along the Cumming coves they work the air over the water and the shoreline trees, and at daybreak they need somewhere dry and sheltered to sleep — a gable end, a soffit, a chimney, or the loft of a boathouse. The number-one sign is guano on the ground, deck or porch right below the spot they're using, often with a dark stain at the entry itself.

Bats are a different job from every other attic animal. They're protected, so the answer is exclusion rather than extermination, and for part of the year the colony is raising pups that can't fly yet. A seasonal lake house can host a growing roost for months without anyone noticing, and new subdivision homes with unfinished seams can pick one up too. Either way, a licensed Forsyth County pro looks at the calendar first, then runs the work in an order that keeps every bat alive.

April 1 to July 31: the blackout months

From April 1 through July 31, Georgia's female bats are nursing pups too young to fly, and exclusion is avoided. Close the exits during that stretch and the adults get out while the young are left behind to die in the walls — creating an odor problem, a guano problem and a protected-species problem at once. If the colony poses no genuine health risk and it can't be confirmed there are no flightless young, the right call is to wait. When it truly can't wait, Georgia DNR allows exclusion inside that window when a licensed Nuisance Wildlife Control Operator carries it out. Inspections can happen any time; the exclusion itself is booked for early spring or for late summer into fall.

Guano and the histoplasmosis risk

Bats return to the same roost night after night, and the droppings accumulate. Dried guano can harbor the fungus Histoplasma, which causes the lung infection histoplasmosis when its spores get stirred into the air. That's why roost cleanup is handled as contained biohazard work rather than a quick sweep. Removing the guano is generally the right move — but a full insulation replacement isn't automatically needed, and a good pro will tell you honestly when it isn't.

No holes to find — just gaps

A bat doesn't chew or force its way in; it slips through a gap that's already there. On Cumming homes the usual openings are gable vents, gaps along fascia boards, ridge vents, roofline transitions, uncapped chimneys, and the small seams new construction leaves behind. Boathouses and lake-house porches with exposed rafters add more spots. An opening can be barely wider than a finger, so the inspection has to cover every edge — miss one and the colony simply moves to it.

How the one-way exclusion runs

Nothing is trapped. After the exits are mapped, the pro installs a one-way device — often called a bat valve — at each active opening. Bats leave at dusk to feed over the lake and can't come back in. Once a visual check confirms the roost is empty, the openings are sealed permanently and the guano is cleaned. A typical job takes two or three visits; a small roost in a gable vent alone can sometimes be handled more quickly.

Why sprays and quick caulk don't work

Sealing the gap the moment you spot it feels responsible, but in maternity season — or any time before the whole colony is out — it shuts bats inside to die, which is both a cleanup mess and a legal issue with a protected species. Repellent sprays, mothballs and ultrasonic devices don't move a colony either. The rule doesn't change: inspect first, then exclude only outside the April-through-July window unless a licensed operator has a reason to act inside it.