Signs of Termites in Your Home: An Australian Identification Guide

Termites are the most financially destructive pest an Australian home can face. Roughly one in three properties will be affected at some point, and the damage they cause across the country each year outstrips the combined toll of fires, floods and storms. The cruel part is that they work silently and out of sight, often for years, before a single visible clue appears.

That is exactly why knowing the early warning signs matters. This is a room-by-room, sign-by-sign guide to recognising termite activity in an Australian home, what each clue actually means, and what to do (and importantly, what not to do) if you find evidence.

What Are Termites?

Termites are small, soft-bodied social insects that live in large colonies and feed on cellulose, the material found in timber, paper, cardboard and many building products. They are often called “white ants”, but they are not ants at all; they are more closely related to cockroaches.

In Australia, the termites that damage homes are overwhelmingly subterranean species, led by Coptotermes (widely regarded as the country’s most destructive), along with Nasutitermes, Schedorhinotermes and others. Subterranean termites nest underground or in a central hub and travel to your home’s timber through protected mud tunnels. Because they avoid open air and light, you will usually see the evidence they leave behind long before you ever see the insects themselves.

Sign 1: Mud Tubes (Shelter Tubes)

Mud tubes are the single most reliable sign of subterranean termites, and one of the clearest signs of termites in a house. These are pencil-width tunnels of compacted soil, saliva and droppings that termites build to travel between the ground and your timber without drying out or exposing themselves to predators.

Where to look: along foundations, brick piers, subfloor joists, retaining walls, and up the outside or inside of walls. Termites will tube straight over concrete and brick to reach timber above. Active tubes are damp and crumble to reveal live termites; old, dry, brittle tubes still signal that activity has occurred and may be ongoing nearby.

Sign 2: Signs of Termites in Walls

The signs of termites in walls are easy to miss because the damage happens inside the cavity first. Watch for paint that looks blistered, bubbled or rippled, plasterboard that sounds papery or feels soft when pressed, and faint mud-coloured lines bleeding through paintwork. Doors and windows that suddenly stick or won’t close can indicate timber frames swelling as termites tunnel through them.

A simple test: tap along skirting boards, architraves and wall studs with the handle of a screwdriver. Sound timber gives a solid thud; termite-eaten timber sounds hollow or papery because the pests eat the wood from the inside out, leaving only a thin veneer.

Sign 3: Hollow-Sounding or Damaged Timber

Beyond walls, check any exposed timber in the home. Termites gouge galleries through the interior, so a floorboard, door frame, deck post or pergola beam may look intact but feel spongy, sound hollow, or dent easily under pressure. Sagging or soft floors, and timber that flakes away to reveal soil-packed channels, are strong indicators of an established problem.

Sign 4: Alates (Swarmers) and Discarded Wings

At maturity, a colony releases winged reproductive termites, called alates, to fly off and start new colonies. In Australia this swarming typically happens on warm, humid evenings in spring and summer, often after rain. Alates are frequently mistaken for flying ants, but termite swarmers have two pairs of equal-length wings and a straight, uniform body.

The tell-tale clue is usually not the flight itself but what’s left behind: small piles of discarded, translucent wings gathered on windowsills, near light fittings, on decking or against glass doors. A swarm near your home points to a mature, reproducing colony nearby.

Sign 5: Frass (Termite Droppings)

Frass is a sign that trips up a lot of generic guides, so it’s worth being precise. Drywood termites push their dry, six-sided pellet droppings (frass) out of tiny “kick-out” holes, leaving small mounds of what looks like coarse sawdust or coffee grounds beneath infested timber or furniture. Drywood species are far less common in Australia but do occur.

Australia’s dominant subterranean termites generally do not leave visible frass; they reuse their waste to build those mud tubes instead. So if you find neat piles of pellet-like material, think drywood; if you find mud tubes and no pellets, think subterranean. Either way, it warrants a professional look.

Sign 6: Termite Nests

A termite nest is the colony’s hub. Subterranean nests are often hidden underground, inside tree stumps, or concealed in wall cavities and subfloors, making them hard to spot directly. Some species, such as certain Nasutitermes, build visible mound or arboreal nests on tree trunks and branches. A mud-like mound appearing on an exterior wall, fence or tree near the house is a serious finding, because it means an active colony is close to your timber.

Room-by-Room Quick Checklist

• Subfloor and foundations: Mud tubes on piers and joists, damp musty odour, discarded wings
• Living areas and bedrooms: Blistered paint, hollow-sounding skirting, sticking doors, wings by windows
• Kitchen, laundry and bathrooms: Moisture-prone zones under sinks and behind cabinetry attract termites
• Roof void: Mud leads along beams, hollowed rafters, soft timber
• Garden and perimeter: Old stumps, woodpiles against walls, fence posts, mounds on trees

Termite Identification: Termite or Ant?

Quick termite identification in the field comes down to three features. Termites have straight, bead-like antennae (ants’ are bent or “elbowed”); a broad waist with no pinch (ants have a narrow, pinched waist); and, on swarmers, two pairs of wings of equal length (flying ants have a larger front pair). If it’s pale, straight-bodied and shy of light, treat it as a termite.

What to Do (and Not Do) If You Find Evidence

If you find live termites or fresh mud tubes, the most important rule is simple: do not disturb them. Don’t spray them, break open the tubes, poke the nest or attempt DIY treatments. Disturbed termites simply retreat and re-route to another part of the structure, making the colony far harder to locate and eliminate and potentially spreading the damage.

Instead:

• Leave the area exactly as it is and keep pets and children away
• Avoid moisture near the evidence and don’t move affected timber or furniture
• Book an inspection with an accredited timber pest professional

A qualified technician will identify the species, trace the activity to its source, and recommend the right approach, whether that’s a chemical barrier, a baiting system or ongoing monitoring.

Why Acting Early Matters

Termite damage is rarely covered by home insurance, and a mature colony can compromise structural timber within a few years. The gap between “a few discarded wings on the sill” and “load-bearing timber replaced” can be surprisingly short. Early detection is the difference between a manageable treatment and a major repair bill.

Book a Termite Inspection Before Damage Escalates

If you’ve spotted any of the signs above, don’t wait to see how bad it gets. Flick has been protecting Australian homes since 1918. Our accredited technicians carry out thorough timber pest inspections in line with Australian Standards, and can tailor the right termite treatment and protection for your property.

Found something? Don’t disturb it, get it confirmed. Call 1300 270 019 or book a termite inspection online today.