5 Early Warning Signs of a Termite Infestation
Termite damage is almost always further along than it looks. Colonies work inside walls, subfloors, and foundations for months — sometimes years — before any sign reaches the surface. Catching it early is the difference between a spot treatment and a structural repair bill.
Here's what to check for, in order of how easy each one is to spot:
- Mud tubes. Pencil-width tunnels of soil and saliva running up foundations, walls, or piers. Termites build these to travel between the soil and their food source while staying hidden and moist.
- Hollow-sounding timber. Tap skirting boards, door frames, or structural timber with the back of a screwdriver. A dull, hollow sound means the wood has likely been eaten from the inside out.
- Discarded wings. Reproductive termites ("swarmers") shed their wings after a mating flight, often near windowsills, light fixtures, or doorways. A small pile of uniform, translucent wings is a strong signal a colony is nearby.
- Doors and windows that suddenly stick. Termites introduce moisture as they tunnel, which can warp frames and make them difficult to open or close.
- Frass. Drywood termites push out small, ridged, sawdust-like pellets from tiny holes in timber. Find a pile of what looks like fine sawdust with no obvious source, and it's worth a closer look.
If any of these show up, avoid disturbing the area before an inspection — mud tubes and frass are useful evidence for a technician working out where the colony is and how far it's spread. Both pre-construction soil treatment and post-construction termite control exist for a reason: prevention is far cheaper than repair.