Correct identification is half the job. Different ant species need different treatments — a bait that wipes out a carpenter ant colony will actually make a pharaoh ant problem worse. Here are the species we see most often on Mt. Pleasant properties.

• Red Imported Fire Ants. Large dirt mounds in lawns, painful stings, and aggressive swarming when disturbed. All of Charleston County sits inside the USDA federal fire ant quarantine zone, which means every property here is at risk. We use a two-step approach — direct mound treatment plus a broadcast bait — that actually collapses the colony instead of just scattering it.
• Carpenter Ants. The second-most-destructive wood pest in the Lowcountry after termites. They don’t eat wood, but they hollow it out to nest — usually in moisture-damaged framing, deck posts, window sills, and tree stumps. Finding them is often a sign of a bigger moisture problem. See our termite control services if you’re worried about wood damage.
• Argentine Ants. Tiny, brown, and relentless. They form supercolonies with multiple queens, so the standard retail spray just splits them into more colonies. We use non-repellent residuals and targeted baits to take out the whole network.
• Odorous House Ants. Small, dark, and unmistakable — they smell like rotten coconut when you crush one. They love moisture and sweets, which is why they end up in kitchens, bathrooms, and around leaky pipes.
• Asian Needle Ants. An invasive species that’s established across South Carolina and medically significant — stings can cause severe allergic reactions, including anaphylaxis in sensitive people. Most of our neighbors don’t even know this ant is on their property. We do.
• Acrobat Ants. Named for how they raise their abdomen when disturbed. They nest in wall voids, foam insulation, and moisture-damaged wood — often alongside carpenter ant or termite activity, which makes them an early-warning pest worth taking seriously.
• Ghost Ants, Pharaoh Ants & Little Black Ants. The indoor-nuisance trio. Small, persistent, and drawn to sweets, grease, or standing water. Pharaoh ants in particular will “bud” (split into multiple new colonies) if you treat them with the wrong spray, which is why DIY often makes them worse. We use colony-wide baits that eliminate them at the source.

For identification photos and more detail on each species, visit our Pest Library.