Carpenter Ants in Burlington County: Signs of Infestation in Wooded Properties
Medford, Tabernacle, Southampton, and Marlton's wooded properties attract carpenter ants. Here's how they differ from termites, when they're most active, and how to eliminate them.
Carpenter Ants Are Not Termites — But They're Still Destructive
The first question Burlington County homeowners ask when they find large black ants in their home is always the same: "Are these termites?" Carpenter ants and termites both damage wood, but they do it very differently — and correctly identifying which pest you're dealing with changes the entire treatment approach.
Carpenter ants (Camponotus species) don't eat wood. They excavate it to create smooth-walled galleries for nesting, leaving behind a distinctive material called "frass" — a mix of wood shavings and insect parts that looks like coarse sawdust and accumulates in small piles below active nest sites. Termites eat wood from the inside, leave irregular galleries packed with soil, and produce mud tubes on foundation surfaces.
Both are serious structural concerns. But in Burlington County's wooded suburban landscape, carpenter ants are more commonly the culprit when homeowners find large black ants in their kitchen in the spring.
Why Burlington County Has So Many Carpenter Ant Problems
The communities most affected by carpenter ants in Burlington County share one characteristic: wooded, tree-rich properties with proximity to forests, parks, or preserved land. Medford, Medford Lakes, Tabernacle, Southampton, Shamong, and the wooded edges of Marlton and Evesham Township all see consistent carpenter ant pressure because of three factors:
- Dead and decaying wood on the property. Carpenter ants establish their primary "parent" colony in dead wood outdoors — a dead tree, a decomposing stump, a wood pile, or a fallen log. The wooded character of Burlington County's Pine Barrens-adjacent communities means this nesting substrate is everywhere.
- Moisture-damaged wood in the structure. Carpenter ants expand into homes by establishing "satellite" colonies in wood that has experienced moisture damage. Window frames with failed caulk, soffits with poor drainage, crawl space timbers in contact with damp soil — all of these are carpenter ant targets. Wood doesn't need to be obviously rotted to be attractive; even slight moisture infiltration is enough.
- Foraging trails from outdoor colonies to indoor food sources. Even when the primary colony is outdoors, workers forage indoors looking for food — following invisible pheromone trails from outdoor nest sites to your kitchen, bathrooms, and pantry.
Spring Emergence: When Carpenter Ants Become Visible
Carpenter ant activity in Burlington County follows a predictable seasonal pattern. Workers begin foraging as temperatures consistently rise above 50°F — typically in late March and April — after a winter of dormancy inside wall voids, under bark, and within structural wood. The first sign for many Burlington County homeowners is a handful of large black ants in the kitchen in early spring, often near windows or along the floor perimeter.
In May and June, established colonies may produce alates — winged reproductive ants — that swarm to establish new colonies. Finding large winged ants inside your home during this period is a strong indicator of an established indoor satellite colony, not just foraging workers from an outdoor nest.
Identifying Signs of Infestation
- Frass: Coarse, sawdust-like material mixed with insect body parts, accumulating in small piles beneath wall openings, under soffits, or near window frames. This is the most specific indicator of active carpenter ant gallery construction.
- Worker ants indoors at night: Carpenter ants are most active after dark. Finding large black ants (typically ½ to ¾ inch) foraging in kitchens or bathrooms after 10 PM is a reliable infestation indicator.
- Rustling sounds in walls: Active galleries in wall voids or structural wood can produce subtle rustling or crunching sounds, particularly in quiet conditions.
- Visible trail to/from outdoor wood: Workers often follow the same trail between indoor and outdoor areas. Locating this trail leads you toward the outdoor parent colony.
Why Treating Carpenter Ants Requires Two Targets
Effective carpenter ant control requires treating both the satellite colonies inside your structure AND the parent colony outdoors. Treating only indoors removes the workers you can see but leaves the parent colony intact — which will continue producing workers and re-infesting the structure. Treating only the outdoor colony may eliminate the primary nest but leaves satellite nests inside your walls continuing to damage wood and produce foragers.
Professional carpenter ant treatment includes: locating and treating outdoor parent colonies (often in stumps, dead wood, or landscaping), applying residual perimeter treatment to disrupt foraging trails, treating wall voids and structural wood where satellite galleries are established, and correcting moisture issues that made the wood attractive in the first place.
Carpenter Ant Control Throughout Burlington County
We serve Burlington County homeowners in all of the county's wooded communities — Medford, Medford Lakes, Tabernacle, Southampton, Shamong, Marlton, Evesham Township, Moorestown, and beyond.
Call (609) 793-8707 to schedule an inspection. Spring is the right time to act — before satellite colonies become established and before the summer foraging season drives workers deeper into your structure.