White Ants in the House: What Australians Actually Mean
If you have been told there are white ants in the house, or you have found something in a wall and gone looking for what white ants look like, here is the short answer.
There is no such insect as a white ant. In Australia, white ants means termites. The word is a hundred-year-old colloquialism that stuck, and it is still what most people say. If someone has told you that you have white ants, they have told you that you have termites, and that is a building problem rather than an insect nuisance.
The name is worth clearing up properly, because using the wrong word sends people to the wrong information, the wrong products and occasionally the wrong tradesperson.
Why they were ever called white ants
Termite workers are pale, soft-bodied, roughly ant-sized, and they live in large organised colonies with a queen and castes. To anyone looking at a broken-open piece of timber in 1900, calling them white ants was a perfectly reasonable description.
Biologically it is wrong. Ants are closely related to bees and wasps. Termites are far more closely related to cockroaches, and they are grouped with them. The two are not relatives that happen to look alike, they are separate branches that arrived at colony life independently.
The name survived in Australia because everyone knew what it meant. Older builders, pest reports, insurance conversations and family advice all still use it.
Why the wrong word causes real problems
- You buy the wrong product. Ant baits and ant sprays do nothing to a termite colony. Worse, spraying an active termite working drives the colony to a different part of the building and destroys the evidence a technician needs
- You search for the wrong information. Advice about ant trails, sugar baiting and nest location is irrelevant to termites
- You misjudge the urgency. Ants in the kitchen are an annoyance. Termites in a wall are structural damage that gets worse every month it is left
- You look in the wrong place. People search skirting boards for a trail of insects walking in the open. Termites are never in the open. They travel inside timber and inside mud tubes, and they abandon a section the moment it is exposed to air
Termite or ant, told apart
Most people meet the winged stage first, because that is the one that flies to a light and lands on a window sill.
| Termite | Ant | |
|---|---|---|
| Waist | Broad and straight, the body looks like one piece | Sharply pinched between thorax and abdomen |
| Antennae | Straight, like a tiny string of beads | Bent, with an obvious elbow |
| Wings | Four wings, all about the same length, longer than the body | Front pair clearly longer than the rear pair |
| Colour of workers | Creamy white, soft, no hard shell | Brown, black or reddish, hard shelled |
| Behaviour | Avoid light, never seen walking in the open | Forage in the open in visible trails |
| What they eat | Cellulose: structural timber, skirtings, door frames, paper, cardboard | Sugars, proteins, kitchen scraps |
The behaviour line is the most useful one for a homeowner. If you can see them walking across the floor, they are ants. Termites stay sealed inside timber and mud, and the ones you eventually see are usually exposed by accident when something is opened up.
The actual signs of white ants in a house
Since you will almost never see the insect, these are what you look for instead. In Sydney the destructive species are subterranean, which means they nest in or against soil and build their way up.
- Mud tubes. Narrow tracks of dried mud, pencil width or wider, running up piers, foundation walls, the slab edge, retaining walls and the outside of the building. This is the classic sign
- Discarded wings. Small pale wings, all four the same length, collecting on window sills, around light fittings, in cobwebs or on a pool surface after a warm humid evening
- Hollow sounding timber. Tap along skirting boards, architraves and door frames. Termites eat from the inside and leave a shell, so the sound turns papery over an attacked section
- Rippled, blistered or bulging paint, and skirtings that look slightly dented or bowed
- Mud packed into cracks in skirtings, architraves and floorboard joints
- Doors and windows that suddenly stick with no change in the weather
- Sagging or spongy floors and cornices separating from the wall
- Clicking or rustling in a wall on a quiet night
Note what is not on that list: piles of droppings. Those are a drywood termite sign and Sydney’s problem species are subterranean, which build their waste into their mud rather than expelling it. We set that out in full in termite droppings, frass and mud tubes, because it is one of the most commonly repeated errors in Australian termite content.
Where they come from
Subterranean colonies nest in soil, in tree stumps, under concrete, inside retaining walls or in a dead tree, and they forage outward underground looking for timber. A colony may be nesting on a neighbouring property and feeding on yours.
What draws them to a particular building is usually moisture and access:
- Garden beds and mulch built up over the slab edge or against weep holes
- Leaking taps, air conditioning condensate and blocked or broken downpipes
- Poor subfloor ventilation and damp under the house
- Timber in ground contact: sleeper walls, fence posts, stored offcuts, old formwork left under a deck
- Tree stumps left in the ground after removal
- Concrete paths and slabs poured over the top of an existing damp course
Removing those conditions is genuinely preventative work, and it is the cheapest part of termite management. Our termite prevention checklist is the practical version of that list.
What to do if you think you have them
- Do not spray anything. Ant spray, surface spray, fly spray, none of it helps and all of it makes the colony relocate inside the structure
- Do not open up the damage to see how bad it is. Once the workings are exposed, that section is abandoned and the trail goes cold
- Photograph what you found and note the location
- Book an inspection. A proper inspection covers the subfloor, roof void, interior, perimeter, fences, retaining walls and garden, and tells you whether there is active termite work in the building and what it will take to deal with
If you are mid-purchase on a property, this is not something to leave until after settlement. We covered why in why a termite inspection is necessary before buying a house in Sydney.
What Pest Power does about termites in Sydney
Termite work is the job where the inspection is the product. You should finish it knowing exactly what is present, where, what caused it and what the options cost.
- A full property inspection across the subfloor, roof void, interior, external perimeter, fences, retaining walls, stored timber and garden
- Activity located and identified, along with the conducive conditions that brought the colony to that part of the building
- Treatment options explained in plain terms, which for a Sydney property usually means a chemical soil treatment or a baiting system, set out in our comparison of the two
- Ongoing annual inspections, because a treated property still needs monitoring and most policies and warranties depend on it
- Same-day and after-hours attendance across Sydney when activity has just been found
Termite work is quoted after the inspection rather than over the phone, because the scope depends on the construction, how far the activity has gone and which treatment you choose.
I had both pest control and termite inspection carried in by Mason and Mac. They were both punctual on time, provided detailed explanation on what they will do. Mac is genuine and patiently answered all our questions. We appreciate your work, definitely recommend!
Google review
Pest Power Sydney holds a 5.0 rating from more than 320 Google reviews, and thorough inspection and knowledgeable technician are two of the themes Google itself pulls out of that profile.
Think you have white ants
Then you think you have termites, and it is worth confirming rather than wondering. Book an inspection before anything gets sprayed or opened up. Sydney wide, seven days, same-day attendance available.
Full detail is on our Sydney termite treatment page.
Common questions about white ants
Are white ants and termites really the same thing
Yes. White ant is an Australian colloquial name for termites. There is no separate insect called a white ant.
Are white ants dangerous to people
Not directly. They do not bite people in any meaningful sense, they carry no disease of concern and they are not venomous. The danger is entirely to the building.
Will ant spray kill white ants
No. It kills the handful it lands on and pushes the rest of the colony into another part of the structure, which usually means the damage continues somewhere you cannot see it and the eventual treatment is harder.
How fast do they cause damage
It depends on the species, the size of the colony and the timber, so any single figure is a guess. What is reliable is that damage is progressive and never stops on its own. We looked at the question in how fast termites destroy a house in Sydney.
Does home insurance cover white ant damage
Standard building policies in Australia generally exclude termite damage, which is a large part of why annual inspections matter. Check your own policy wording rather than relying on a general statement.
My neighbour has them, should I worry
Yes, enough to get an inspection. Subterranean colonies forage underground across property boundaries, and a colony feeding on a fence line or a stump next door is close enough to reach your building.