Ant Control That Stops the Colony, Not Just the Trail
Endless ant trails through the kitchen? Sprays only scatter them. GuardLine locates the nest and eliminates the colony with targeted baiting — for results that actually last.
Fast
No Long Waiting Times
Local
Family Owned
Licensed
Lic. No. 5087400
Follow the Trail
Why Spraying Ants Makes It Worse
The ants you see are foragers — a tiny fraction of the colony. Repellent sprays kill them on contact, but the queen keeps laying, and some Sydney species respond to spraying by splitting into multiple colonies. That's why the trail moves instead of disappearing.
Sydney homes deal with black house ants in kitchens and walls, coastal brown ants excavating between pavers, and Argentine ants forming super-colonies that stretch across property lines.
Professional ant control works with the colony's own behaviour: slow-acting baits that foragers carry back and share, reaching the queen and brood that sprays never touch.
The goal isn't to kill the ants you can see — it's to eliminate the queen and the colony they come from.
Ants in the walls or power points?
Some species nest in cavities and meter boxes — call 0412 074 583 before they cause damage.
Signs of an Ant Problem
A trail or two is normal in summer — these signs mean a colony has moved in.
- Persistent trails along skirting, benches or paths
- Small mounds of soil between pavers or at wall edges
- Winged ants appearing indoors
- Ants in pet food bowls and pantry goods
- Fine dirt piles around power points or cornices
- Trails reappearing within days of spraying
Our Ant Services
Complete Ant Control
Nest-focused treatments matched to the species — because different ants need different approaches.
Nest Location & Treatment
We track trails back to the nest — in gardens, walls, subfloors or under slabs — and treat it directly.
Colony Baiting Programs
Slow-acting baits that foragers share with the queen and brood, collapsing the colony from the inside.
External Barrier Sprays
Non-repellent perimeter treatments that stop new colonies moving in from neighbouring properties.
Paver, Lawn & Garden Treatments
Targeted control for coastal brown ants and funnel ants that undermine paving and lawns.
Kitchen & Pantry Safe Methods
Gels and baits placed out of reach of kids and pets — no chemical smell through your kitchen.
Prevention & Ongoing Plans
Seasonal treatments and honest advice on sealing entry points and removing what attracts them.
How It Works
Simple, Honest Process
Get In Touch
Call or message us describing the problem. We'll give you a clear quote and book a time that suits you — with no long waiting periods.
Inspection & Treatment
A licensed technician inspects your property, explains what's happening and treats the problem at its source.
Ongoing Protection
We give you honest prevention advice and can set up regular treatments to keep your property protected year-round.
Ant FAQ
Common Questions
Why do ants keep coming back after I spray?
Sprays kill foragers but never reach the queen — and some species react to spraying by budding into several new colonies. Until the nest is treated or baited out, new foragers simply replace the ones you killed.
How does ant baiting actually work?
Baits combine a food ants love with a slow-acting active ingredient. Foragers carry it home and share it through the colony, including the queen. It's slower than spraying — but it's the difference between moving the problem and ending it.
Are ant baits safe around kids and pets?
Yes. Baits are placed in cracks, voids and stations that children and pets can't access, and the amounts used are tiny. We'll walk you through placements before we leave.
How long until the ants are gone?
Expect trails to keep moving for several days — that's the bait spreading through the colony, and it's a good sign. Most infestations collapse within one to two weeks. Don't spray the trails in the meantime; it interrupts the process.
Can you treat ants nesting in walls or under concrete?
Yes. Wall-void colonies are treated with dusts or gels through existing gaps and fittings, and slab-nesting ants are managed with baiting and perimeter treatment — no drilling or digging needed in most cases.
Marching Ants Driving You Mad?
Colony-ending ant treatments for homes and businesses across Greater Sydney.