How do I tell if this is termites or carpenter ants in Georgetown?

Five Things That Chew Through Wood

Georgetown houses take damage from five different sources, and the fix is completely different depending on which one you have. Termites and wood decay fungus both need moisture and leave the wood soft, while carpenter ants, carpenter bees and powderpost beetles are dry-wood problems with their own separate signatures. Guessing wrong wastes money, because a termite treatment does nothing for a beetle infestation and a fungicide does nothing for an ant colony. The damage itself tells you which one you have, if you know what to look for.

Start with what's actually there rather than what you're afraid it is. A hole with sawdust-like frass pushed out of it is a different animal than a hollow-sounding baseboard with no visible opening at all. Mud tubes running up a foundation wall near Williams Drive or DB Wood Road point one direction; a scatter of round exit holes in an old fence post near Old Town points another. The next two sections walk through the differences side by side, then narrow in on how each one is actually confirmed.

Damage Compared Side By Side

Start with how the hole looks, not just that it's there. Termites leave mud tubes across a slab edge or foundation pier, pencil-width trails of packed soil running up brick or block toward wood, and their damage looks hollowed from the inside, with soil packed into the galleries. Carpenter ants excavate clean galleries too, but there's no mud, and you'll usually find frass, coarse wood shavings, pushed out near the opening. Carpenter bees drill near-perfect round holes, about a finger's width, on the underside of a fascia board or deck joist, with coarse sawdust below. Powderpost beetles leave much smaller round holes with fine, powdery frass sifting out, sometimes years after the wood was already in the house. Wood decay fungus shows none of that; the wood just softens, darkens, and sounds hollow when you tap it.

Confirming What You Have

Termites in Georgetown show up as mud tubes, pencil-width and running from soil to wood, often along a foundation wall or a pier where the slab meets the ground. After a dry summer the clay pulls back from the slab edge and leaves a gap big enough to put a hand into, and that gap is exactly how termites reach wood they otherwise couldn't. Sounding the wood with a screwdriver handle or knuckle tells you a lot: termite-damaged wood gives a dull, hollow knock and often crumbles rather than splinters, because they eat along the grain and leave a thin outer shell.

Carpenter ants nest in wood that's already damp, commonly around a leaking shower pan or a window with bad flashing, and they leave smooth tunnels with coarse, wood-colored frass piled below the entrance. Carpenter bees drill near-perfect round holes into fascia boards and eaves, often near Southwestern University's older buildings or any house with exposed untreated trim, and you'll usually hear them before you see them. Powderpost beetles leave the smallest, roundest holes of the group along with a fine talcum-like powder, and wood decay fungus skips the holes entirely, just leaving wood that's spongy, dark, and crumbles wet rather than dry.