Bat Removal & Exclusion in Alpharetta, GA

Bats in your Alpharetta home

Bats feed on night-flying insects, and Alpharetta has a long, steady supply of them along the Big Creek Greenway and the wooded creek bottoms that run through town. A colony foraging there needs somewhere to spend the day, and a large house with gables on several sides, vented attics and decades-old trim offers a lot of quiet, dark crevices. Bats are easy to miss — they don't chew or scratch — and the most reliable sign is simple: droppings collecting on the ground, a porch or a sill beneath the spot where they come and go.

Bat work follows rules that other attic animals don't. Bats are protected, so the job is exclusion, never extermination, and for part of each year the colony is raising young that can't yet fly. Close the exits then and those pups die inside the house. A licensed Fulton County pro checks the calendar before anything else, then works through a set sequence designed so that every bat leaves on its own.

The April-through-July pause

From April 1 through July 31, female bats in Georgia are nursing young that can't fly, and exclusion is held off during that stretch. Sealing a roost then lets the adults out but leaves the pups behind to die — a decomposition problem, a guano problem and a protected-species problem all at once. Pros generally recommend leaving a colony in place until the period ends unless they can confirm there are no flightless young; the exception is a genuine health risk, and Georgia DNR allows a licensed Nuisance Wildlife Control Operator to exclude inside the window. The inspection itself can happen any time.

Guano and histoplasmosis

A colony that returns to the same spot every day builds up droppings over time, and those droppings stain and corrode what they land on. The bigger concern is invisible: dried guano can harbor spores of the fungus Histoplasma, which cause the lung infection histoplasmosis when they're stirred into the air. Removing the guano is usually the right call. Whether insulation has to be replaced is a separate question — often it doesn't, and a good pro will tell you honestly what your attic actually needs.

Gable vents and roofline seams

Bats don't create openings; they use ones that already exist, and the more roofline a house has, the more of those there are. On Alpharetta's larger homes the usual spots are gable vents, gaps where trim has pulled away at a rake edge or dormer, roof-to-wall junctions and chimney chases. Sometimes bats are only in the gable vent itself rather than the attic, which is a smaller job. An opening barely wider than a finger is enough, so the inspection covers every elevation of the house.

One-way out, then sealed

Bats are never trapped. The pro identifies each active exit and hangs a one-way device — sometimes called a bat valve — that lets bats drop out at dusk to feed but not get back in. Smaller gaps elsewhere are sealed at the same time. After enough nights for the colony to leave, a visual inspection confirms the roost is empty, the exits are permanently closed, and the guano is cleaned up. A typical job takes two or three visits; a simple one can sometimes be done in a single day.

Why do-it-yourself sealing goes wrong

It's tempting to caulk the gap the moment you spot it. Do that during the maternity period, or before every bat has left, and you trap them inside — dead bats in the walls, an odor problem, and a legal issue with a protected species. Ultrasonic devices and repellent sprays won't drive out a colony either, and mothballs should never be used for any animal problem. The safe sequence is always the same: inspect, wait for the right window, exclude, then seal.