Fire ants in Ipswich and Brisbane: what to do
By Lian, Co-owner, The Yard Gurus
Published
If you've found a mound of small copper-brown ants in your yard and you're in Brisbane or Ipswich, don't touch it and don't treat it yourself. Report it to the National Fire Ant Eradication Program within 24 hours, either online through the Fire Ants Portal or by calling 13 22 68.
Every suburb in Ipswich sits inside the fire ant biosecurity zone, and the current zone covers Brisbane, Ipswich, Logan, Redlands, Scenic Rim and the Gold Coast, so most SEQ homeowners reading this are inside it too (Ipswich City Council). That matters because you have a legal duty to act, not just a practical reason to.
What you need
- A phone or camera to photograph the ants and the nest from a safe distance
- Something to mark the spot (a stake, an upturned bucket, a bit of tape on a nearby fence) without walking on the mound
- Closed shoes, long pants and gloves if you need to get near it at all
- Your address and the exact location in the yard, for the report
- Nothing else. No shovel, no boiling water, no insecticide, no garden hose
That last point matters more than it sounds. Disturbing a nest scatters the colony and can make it harder to eradicate, and homeowner treatment isn't the approved method here anyway: eligible residents in the suppression zone (which covers parts of Logan, Ipswich, Redlands, Brisbane and the Gold Coast) can register for a free government treatment kit instead (Fire Ants Portal).
How to identify them
Fire ants are small, 2 to 6mm, with a coppery brown head and body and a darker abdomen. A single nest holds ants of noticeably different sizes, which is unusual and a useful tell against native ants. If you disturb the mound (which you shouldn't deliberately do, but a mower or a kid's foot sometimes will), they swarm aggressively rather than scattering (Business Queensland).
Nests themselves are inconsistent, which is part of why people miss them:
| What you might see | Detail |
|---|---|
| Dome mound | Up to 40cm high, loose crumbly soil |
| Flat patch | Looks like disturbed dirt, no obvious raised shape |
| No entry holes | Unlike normal ant nests, there's no visible hole they're using |
| Location | Open lawn, garden beds, along fence lines, under pavers, logs, bricks |
| Under objects | Often found when something is lifted, not from the surface |
(Mound detail from Business Queensland; the flat-patch and no-entry-hole detail also confirmed by Logan City Council.)
Steps to follow this weekend
- Stop and look, don't poke. If you spot a suspicious mound while mowing or weeding, stop what you're doing in that area. Don't rake it, spray it, or pour anything on it.
- Keep people and pets back. Fire ant stings cause a painful burning and itching sensation that can last about an hour, and in rare cases trigger a serious allergic reaction, so get kids and animals away from the area first (qld.gov.au).
- Photograph it from a safe distance. A few clear photos of the mound and, if you can get them safely, the ants themselves. Don't lean in close or disturb the soil to get a better shot.
- Mark the location without walking on it. A stake a metre or two away, or a note of its position relative to a fence or garden bed, is enough for an inspector to find it later.
- Report it the same day, within 24 hours. Use the Fire Ants Portal or call 13 22 68. Ipswich City Council also lists Biosecurity Queensland on 13 25 23 as an alternative contact. You can track the status of your report once it's lodged.
- Avoid moving soil, mulch, turf or potted plants from that part of the yard. Soil, manure, hay, quarry material, potted plants, mulch and compost are all recognised fire ant carriers. If you're planning any landscaping job, turf laying, or getting a load of soil or mulch delivered or removed, check the current movement rules first, because carrying contaminated material off-site (even to the tip) can spread a colony to a new property (Moreton Bay City Council).
- Keep mowing and foot traffic away from the marked spot until an inspector has been out. You can keep using the rest of the yard normally.
- Wait for contact. An authorised officer will usually follow up to inspect and, if confirmed, arrange treatment. This is free; you're not expected to buy or apply anything yourself unless you've specifically registered for a self-treatment kit in the suppression zone.
Under the Biosecurity Act 2014, every Queenslander has a general biosecurity obligation to manage fire ants they know about or could reasonably be expected to know about, so reporting isn't optional once you suspect a nest (Ipswich City Council).
How to tell it's been dealt with
You won't get a dramatic before-and-after here, because treatment is handled by the Eradication Program, not by you. What you're looking for:
- Confirmation from your report (check status via the tracking tool) that an inspection happened
- No new mounds forming in the same spot or nearby over the following weeks
- No more aggressive swarming if the area is accidentally disturbed
- If you used a self-treatment kit, follow the instructions that come with it for how long to wait and what to check, since this varies by kit and bait type
Keep half an eye on the same general area for a season afterwards. Fire ant colonies can re-establish nearby, and new mounds nearby should be reported again rather than assumed to be the same, already-treated nest.
When it's worth calling someone
For the fire ants themselves, this isn't really a DIY-versus-professional decision: it's a legal reporting obligation, and the actual treatment is either done by Biosecurity Queensland or by you using their free kit, not by a private pest contractor. Don't pay anyone to "treat" a suspected fire ant nest before you've reported it.
Where a professional does help is everything around the nest. If you've found a mound in an overgrown corner of the yard because mowing has fallen behind, getting the lawn back under control with a regular mowing service makes future mounds far easier to spot early, since fire ants favour open lawn and disturbed soil and a short, well-kept lawn makes a 40cm mound or a flat disturbed patch obvious rather than hidden in long grass.
If you're planning to bring in soil, turf or mulch for a landscaping project in Ipswich or Brisbane, check the biosecurity zone movement rules before ordering, since contractors delivering material also have obligations under the same laws.
Sources
Common Questions
What happens if I accidentally disturb a fire ant mound while mowing?
Stop working in that area immediately and move people and pets away, since disturbed nests swarm aggressively. Keep clear of the spot, mark its location, and report it within 24 hours rather than trying to treat or flatten it yourself.
Will I get in trouble if I don't report a fire ant nest?
Under the Biosecurity Act 2014, every Queenslander has a general biosecurity obligation to manage fire ants they know about or could reasonably be expected to know about, so reporting a suspected nest isn't optional. Once you suspect a nest, you're expected to report it within 24 hours through the Fire Ants Portal or by calling 13 22 68.
Do I have to pay for fire ant treatment myself?
No, treatment is handled by the Eradication Program for free once your report is confirmed, or you can register for a free government treatment kit if you're in the eligible suppression zone. You shouldn't pay a private pest contractor to treat a suspected fire ant nest before it's been reported.
Can I still get soil or mulch delivered if I'm in the fire ant biosecurity zone?
You can, but you need to check the current movement rules first, since soil, mulch, turf, hay, quarry material, potted plants and compost are all recognised fire ant carriers. Contractors delivering this material also have obligations under the same biosecurity laws, so it's worth confirming before ordering a landscaping job.
How long should I keep watching the area after reporting a fire ant nest?
It's worth keeping an eye on the same general area for a season afterwards, since colonies can re-establish nearby. If you spot a new mound nearby, report it again rather than assuming it's the same nest that was already treated.
