Location: Cameron Park, NSW — Servicing Newcastle, Lake Macquarie & Maitland
You've sprayed the trail. You've wiped down the benchtops. You've sealed the biscuits in containers. And yet, a week later, there they are again — a new line of ants marching through your kitchen like nothing happened.
This is the most common ant complaint we hear from homeowners across the Hunter Region, and the reason it keeps happening comes down to one thing: killing ants you can see does nothing about the thousands you can't.
The Real Problem Is the Colony
Ants are eusocial insects, meaning they operate as a single superorganism. The ants entering your home are worker ants — scouts and foragers — that make up only a small fraction of the colony. The queen, the eggs, the larvae, and the bulk of the population are typically located in a nest outside, often several metres from where you're seeing them inside.
When you spray the trail, you eliminate the workers you can see. The colony detects the chemical disturbance, and one of two things happens: it redirects foraging through a different entry point, or it temporarily retreats and resumes activity once the chemical residue breaks down. Either way, the colony survives and the problem returns.
Common Ant Species in the Hunter Region
Knowing which species you're dealing with matters, because different ants respond to different treatments.
Coastal Brown Ant
Pheidole megacephala
The most common household ant in coastal NSW. Small, light brown, and found nesting in soil, under pavers, and along building perimeters. They're attracted to protein and grease as much as sugar — which is why they show up in both the kitchen and the laundry.
Black House Ant
Ochetellus glaber
Shiny black and very small. Commonly found trailing along kitchen benchtops and into pantries, drawn to sweet foods. Their nests are often located in wall cavities, roof voids, or under concrete slabs — making them harder to treat from outside.
Green-Head Ant
Rhytidoponera metallica
The one that stings. Common in gardens and lawn areas. Less likely to enter the home but a genuine hazard for children and pets in the yard.
What Professional Ant Treatment Looks Like
Effective ant control requires treating the colony, not just the trail. At Green Top Pest Management, we use a combination of:
- Perimeter barrier spray — applied around the full external perimeter of the home to prevent foraging ants from entering
- Entry point treatment — targeted application around doors, windows, weep holes, and penetrations
- Granular or liquid bait — placed near foraging trails so workers carry the active ingredient back to the nest, where it spreads through the colony including the queen
Bait is particularly effective for species like coastal brown ants because it works with the ant's own biology. Workers are attracted to it, consume it, and share it with nestmates through trophallaxis, or food sharing. The colony is affected from within.
What You Can Do in the Meantime
- Seal food in airtight containers — including pet food
- Fix leaking taps and eliminate pooling water, which ants seek out as much as food
- Seal cracks and gaps around windows, doors, and pipe penetrations
- Remove leaf litter and garden debris from around the perimeter of the house
- Avoid using cheap surface sprays — they disrupt baiting programmes and can cause colonies to split
Avoid spraying ants if you're planning a professional treatment. Surface sprays can make bait programmes less effective by alerting the colony before the bait reaches the queen.
Struggling with Recurring Ants? Let's Solve It Properly.
Green Top Pest Management treats ant infestations across Newcastle, Lake Macquarie, and Maitland. Our treatments target the colony — not just what's visible — so the results actually last.
Call 02 4963 2274 or visit greentoppest.com.au for a free quote.