Five Signs You Should Get Ant Pest Control Right Now
Recent studies have revealed that the earth has over 2.3 million ants per human being. Such an ant population of more than…
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Ants have an important role in the ecological balance, but they can be a nuisance to humans and our living space. They are one of the most hardworking creatures around the world. Hence, it is hard to get rid of them completely.
Are you struggling with infestation issues and searching for ant removal services to protect your building, food products, and yourself?
Tom’s Pest Control Melbourne has your back. We are the primary destination for ant pest control for Melbourne’s residents and businesses. With advanced ant infestation pest control techniques and quality services, we have helped thousands of homeowners and businesses to safeguard their health and wealth.
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The fastest results come from treating the colony, not just the trail you can see. A gel bait or granule applied to nest entry points and travel routes works far faster than a surface spray, which only kills the workers that contact it. For Argentine and Coastal Brown ants, the most common species in Melbourne homes, baiting the foraging trail so workers carry the active ingredient back to the colony is the most effective single step.
Surface sprays kill the ants you see and repel the rest, pushing them to another entry point rather than addressing the colony. If the colony is in a wall cavity, under the slab, or in a garden bed nearby, it keeps producing workers regardless of what is applied to the kitchen bench. Lasting control targets the colony directly and removes the food and moisture sources drawing ants in.
Ant control and removal in Melbourne starts from $179 for a standard residential treatment. The final price depends on property size, the species involved, and whether the nest is in a garden location or inside a wall cavity or slab. Tom’s Pest Control Melbourne provides written upfront quotes before any work begins.
White ants is the common name for termites in Australia. They are not the same as the ant species on this page and require completely different treatment. If you have found pale or white ants inside timber, contact our termite team rather than booking an ant treatment. See our Termite Inspection Melbourne page.
Argentine ants are the most widespread, particularly in the inner suburbs. Coastal Brown ants are common across eastern and northern suburbs. Black Garden ants are found throughout Melbourne in garden beds, under paving and around building perimeters. Bull ants appear in garden areas backing onto vegetation. Each species responds differently to treatment, which is why species identification is the first step on every job.
Yes, and our technicians are seeing this more often. Argentine and Coastal Brown ants are increasingly establishing nests inside wall cavities and roof insulation. These protected spaces hold moisture and stay undisturbed, giving a colony ideal conditions to grow and reproduce year-round. A nest inside a wall requires a different treatment approach to a nest in the garden, which is why the inspection step matters.
However, if a large volume of ants is crawling all around your property, it can be a challenge. Tom’s Pest Control Melbourne offers various ant treatments and ant control services for all your needs, including ant fumigation. The major ant species that you can see in Melbourne and Victoria are the following:
Understanding the ant species plays an important role in drafting an ant treatment or ant fumigation plan. According to the ant species, we choose the specific plan whether it is fire ant control, funnel ant control, or other varieties. Call Tom’s Pest Control Melbourne today for an immediate ant removal treatment in Melbourne.
What our technicians are finding more often: Ants are increasingly nesting inside wall cavities and roof insulation rather than in garden beds at the perimeter. Argentine and Coastal Brown ants are moving deeper into the building structure when conditions outside become less favourable. A wall cavity holds moisture, stays undisturbed, and insulates the colony from temperature changes. These are exactly the conditions that allow a colony to grow and reproduce without any visible surface activity for weeks. By the time a homeowner sees a trail in the kitchen, the colony behind the wall has often been established for months.
Why wetter weather drives ants indoors: Ants are cold-blooded insects, which means increased moisture levels and temperature changes directly influence where they nest and how active they are. During wetter periods, increased ground moisture and vegetation growth create conditions that encourage ants to spread and establish new colonies. Rather than remaining in garden beds, they push into the building’s protected spaces, particularly wall cavities, roof spaces and the insulation around pipes and ducting. This is consistent with what the team sees during callouts after extended wet stretches: activity suddenly visible inside the kitchen or bathroom, originating from a colony that had been quietly growing in the wall for some time.
The pattern on inner-city Melbourne jobs: In older inner-city Melbourne properties, particularly terrace homes and semi-detached houses in suburbs like Fitzroy, Carlton, Collingwood and Richmond, Argentine ant colonies frequently span multiple properties. Treating one side of a shared wall without coordinating with the neighbour rarely produces lasting results, because the colony simply regroups on the untreated side. On these jobs, the technician checks for entry routes through shared wall cavities, pipe chases and subfloor voids, and the treatment plan accounts for the cross-property movement pattern.
| Species | Where They Nest | Risk | What Our Technicians Find on Melbourne Jobs |
|---|---|---|---|
| Argentine Ant | Wall cavities, under paving, building perimeter, shared walls | Moderate | Most common in Melbourne’s inner suburbs. Colonies span multiple properties. Repel if surface-sprayed, bait-based treatment required. |
| Coastal Brown Ant | Wall cavities, under slabs, electrical conduits, subfloor | Moderate | Frequently found nesting inside walls. Attracted to electrical wiring and switchboards. Can damage outdoor electrical equipment and conduit runs. |
| Black Garden Ant | Garden beds, under paving, lawn edges, building perimeter | Low | Most visible after rain when nuptial flight swarms emerge. Entry into the house usually follows a moisture or food source. |
| Carpenter Ant | Damp or decaying timber, wall voids with moisture | High | Nests in moist timber. Finding the carpenter ant colony is the critical step: a colony inside the home traces back to a parent colony nearby. Indicates an underlying moisture or decay problem. |
| Bull Ant | Garden soil, lawns, bush boundaries | High | Sting is serious and can cause anaphylaxis. Common in Melbourne gardens backing onto established vegetation. Nest entrance is a clear hole in the soil. Do not attempt DIY control near areas used by children. |
| White-Footed House Ant | Roof spaces, wall voids, kitchen benching | Moderate | Hard to control with repellent sprays. Colonies are multi-queened and fragment when disturbed, spreading activity further rather than dying out. |
| Singapore Ant | Potting mix, indoor plants, wet soil | Low | Often introduced inside via potted plants. Small size allows entry through very fine gaps. Attracted to sweet residues in kitchens. |
| Jack Jumper Ant | Soil, rocks, dry garden areas | High | Sting causes anaphylactic reactions in sensitised individuals. More common on Melbourne’s urban fringe backing onto native bushland. Professional treatment required. |
Did you know that bull ant bites are highly painful and can feel like 200 bee stings at once? Therefore, as soon as you see these insects around your property, call Tom’s Pest Control for a fully guaranteed ant control treatment in Melbourne.

What changed in the last few seasons: The clear summer-peak, winter-quiet pattern has become less predictable. Increased winter moisture in Melbourne is creating conditions where ant colonies stay active and continue recruiting workers through the colder months. The colonies that establish in wall cavities and insulation during autumn are not going dormant. They are growing. By spring, what started as a small entry through a pipe penetration in March has become an established multi-queen colony behind the kitchen wall. This is the pattern our technicians are now seeing repeatedly.
| Sign | What It Means | What to Do |
|---|---|---|
| Visible ant trail in kitchen or bathroom | Foraging workers following a pheromone trail from the nest to a food or water source | Do not spray the trail. Follow it toward the nest entry point. Book an inspection if the trail reappears within 48 hours of cleaning. |
| Ants in wall sockets or electrical fittings | Colony nesting in wall cavity. Coastal Brown ants are particularly attracted to electrical equipment. | Book an inspection. Wall cavity nests require a different treatment approach to garden bed nests. |
| Flying ants around windows or lights | Nuptial flight. Reproductive ants leaving an established colony to start new ones. Indicates a colony is established close to or inside the building. | Note the time of year and where the flight emerged. Book an inspection to locate the source colony. |
| Fine soil or sawdust near skirting boards | Nest excavation material pushed out by the colony. Argentine and Carpenter ants both produce this. | Book an inspection. The material indicates an active nest inside the wall or subfloor. |
| Ants in potted indoor plants | Singapore ants commonly nest in moist potting mix. | Remove the plant temporarily. Check neighbouring pots. Book an inspection if ants are also active in the kitchen. |
| Trail disappears into wall or floor | Colony is nesting inside the wall cavity, behind tiles, or under the slab. | Do not seal the gap until the colony has been treated. Book an inspection to locate the nest. |
| Activity after rain | Nest flooding pushes ants to higher ground. Wall cavities become active immediately after heavy rainfall. | If activity appears suddenly after rain, check along the ground floor wall perimeter. Book if activity continues after 48 hours. |
| Ants returning after DIY treatment | Surface spray killed the workers but not the colony. The colony keeps producing new workers from inside the wall or slab. | Book a professional inspection to locate the colony. Baiting targeting the nest produces lasting results. |
The following general tips can help you to reduce the likelihood of ant infestation issues on your property:
A homeowner in Fitzroy contacted Tom’s Pest Control after noticing an ant trail running from behind the kitchen splashback, across the bench and into a gap around the power point near the cooktop. They had applied a supermarket surface spray three times over two weeks. Each time the trail disappeared for a day and then came back, slightly shifted to a different entry point.
The inspection confirmed Argentine ants foraging from a colony established in the wall cavity behind the kitchen. The trail had three separate entry points: through the tile grout line at the base of the splashback, the cable entry at the power point, and a gap where the benchtop met the wall on the left side of the sink.
Moisture metre readings along the kitchen wall showed elevated readings consistent with a slow drip from the cold water supply line inside the wall. The moisture had been creating ideal nesting conditions in the insulation material around the pipe. The colony was established in that section of the wall, with foraging routes running through the cable channels to the bench surface.
The terrace was a 1920s-era property with a shared wall on the eastern side. Argentine ant activity was also noted at the base of the shared wall, indicating the colony extended into the neighbouring property’s wall cavity as well.
A gel bait was applied to all three entry points and along the foraging route inside the cable channel, accessible through the power point cavity with the circuit isolated. The gel formulation was selected for Argentine ant feeding preference, which favours protein-based baits at this time of year.
The moisture source inside the wall was documented in the written report with a recommendation to have a plumber check the cold water supply line. The homeowner was advised not to clean the treated surfaces for 72 hours to allow workers to carry the bait back to the colony.
A follow-up was scheduled at 14 days. At the follow-up, trail activity at all three entry points had stopped. No new activity was found along the bench or inside the power point cavity.
Trail activity resolved within 14 days. Moisture source identified and referred to plumber. Entry points documented. Written report provided. Shared wall colony noted for future monitoring.
Similar problem? Ant trail returning after DIY treatment? Call (03) 9034 5957 for a same-day inspection across Melbourne.
What our technicians find on commercial kitchen jobs: The most common finding on commercial kitchen ant jobs is Argentine or Coastal Brown ants nesting inside wall voids adjacent to the kitchen area, with foraging trails running through pipe penetrations behind sinks and dishwashers. The moisture and warmth from kitchen operations create ideal nesting conditions in the wall cavity. Surface sprays applied to the visible trail push the foraging route but do not address the colony, which is why the activity returns within days of a DIY treatment.
Commercial ant control enquiry: Call (03) 9034 5957 for a site inspection, written report and treatment plan for your Melbourne business.
We have numerous features that makes us a great fit for everyone’s needs like:
We are committed to creating a long-term relationship with each of our customers and providing a completely transparent service experience. You can also get an obligation-free quote from us for your ant control requirements.

Every ant treatment comes with a six-month service guarantee. If ants return within the guarantee period, call (03) 9034 5957 and we will return to reassess and retreat.
For ant pest control Melbourne homeowners book, ant removal Melbourne businesses need, and ant exterminator Melbourne customers rely on for urgent same-day jobs, our team is available same day and next day across all Melbourne suburbs.
That’s correct, they are technically the same thing. Most people refer to them as white ants due to a misunderstanding. The term termite is used when treating professionally. Installing a strong barrier can keep termites away from your home, where they can do structural damage. An insurance company won’t pay for termite repairs because there is no sign of activity in that area.
General ants are annoying, but they can also cause harm to your house. Some species bite very painfully, requiring specialised spray treatments to get rid of their colonies inside or outside the structure where they dwell.
At Tom’s Pest Control Melbourne, we provide our consumers with the most effective and dependable treatment alternatives. We also provide a no-obligation quotation that can address your ant problem quickly.
We employ a variety of strategies to get rid of ants. Baiting is the technique of luring ants into a trap using food. Once the ants have consumed the bait, they will be killed by the poison contained within the trap. We use bait stations, sprays, insecticidal dusts, gels and granules depending on the species and the location of the colony.
Despite your best efforts, ants may reappear at any time. We encourage clients to follow the preventative advice given by experts to avoid experiencing problems again and provide a complete service guarantee on our services for six months. If you continue to observe ants in your home after treatment within the guarantee period, we will come back for further treatment.
An ant infestation can usually be controlled within a week or two with a mix of indoor and outdoor treatments. Follow-up measures are essential to avoid reappearance. Ant baits are effective as a therapy inside because ants share the bait with the colony when they return. Insect traps must be routinely refreshed and checked to ensure they are still working effectively.
An enormous Argentine ant colony may cover many homes. You must always be on the lookout for re-infestation from an untreated neighbour’s home. Along with treatment, we advise preventing potential nesting places such as brick or lumber piles and crevices in the pavement.
It’s crucial to locate and eliminate the carpenter ant colony since if you kill the one inside the home, the parent will start another colony somewhere. So, if Tom’s Pest Control Melbourne discovers a carpenter ant issue, we will immediately look for the parent colony.
Baits made specifically for fire ants and other chemicals intended for the nest are typically used as treatment. Pharaoh ants are difficult to control due to their ease of adaptation to different environments. They must be lured out until the nest is empty.
A general pest control spray treatment given to the perimeter of your home every three months can get rid of household ants. This technique is useful if you want to protect your property against these pests but are not dealing with a colony inside the wall. Surface spray alone will not control a colony nesting inside a wall cavity or under the slab: those require gel bait or dust treatment directed at the nest.
You don’t have to worry if it rains after the ant control treatment. Termidor is the product we use to treat black ants on the external perimeter. Termidor bonds to the treated surface and does not wash away once dry, which takes 30 minutes after application. After that, light rain is not a concern and will actually bring ants out and into contact with the treated surface.
We offer a 6-month guarantee on our Termidor ant treatment. If there are any problems at any time within the guarantee period, call us and we will come out and address them.
Fix dripping taps and leaking pipes, and keep an eye on all the moist places of the house, such as the bathroom and underneath the sink. Clean your home regularly, as ants search for food and will be attracted to crumbs or spills. Store food in airtight containers, especially sweet items. Seal cracks around doors and windows, and pick up pet food at night.
Big-headed ant colonies include minor and major workers. Minor workers are about 2mm in length. Major workers can grow to 4mm long. If you have found their nesting places, you can treat them with a cypermethrin product. If you cannot discover the colonies, use ant baits in ant bait stations. Remove any nests or tunnels in your lawn immediately. If you suspect a Big Headed Ant infestation, contact our expert team.
Yes. Tom’s Pest Control Melbourne offers same-day and next-day ant removal service across Melbourne for residential and commercial properties. Call (03) 9034 5957 to check availability and get a written quote before any work begins.
Moisture is the most common draw, particularly dripping pipes, slow leaks under sinks and blocked subfloor drainage. Argentine and Coastal Brown ants actively seek moisture and will establish colonies inside wall cavities where a slow drip has been creating ideal nesting conditions. Food is the second driver: pet bowls, uncovered bins, food scraps on bench surfaces, cardboard packaging holding residual moisture, and the gap between the benchtop and the wall.
Permanent ant control requires three things done together: treat the colony directly, seal the entry points the colony is using, and remove the food and moisture sources drawing ants to the building. DIY surface sprays do one of these three. A professional ant treatment addresses all three on the same visit, which is why professional treatment produces lasting results where repeated DIY treatment does not.
When you need to know how to get rid of ants in the house quickly, start by finding where the trail enters the room rather than spraying it. Follow the trail to the entry point: usually a pipe penetration, tile grout line or gap behind the benchtop. Apply a gel bait at the entry point and along the run. Do not clean the treated surface for 72 hours. If the trail returns within a week, the colony is inside the wall and a professional inspection is needed. Tom’s Pest Control Melbourne provides same-day ant pest control services across Melbourne. Call (03) 9034 5957.
Heavy rain floods ground-level ant nests and forces colonies to move to higher, drier ground. Wall cavities, roof spaces and the insulation around pipes and ducting stay dry regardless of the weather outside. Melbourne’s winter rainfall now drives a pattern we see regularly: a sudden ant trail appearing in the kitchen within 24 to 48 hours of a heavy rain event, tracing back to a colony that moved from a flooded garden nest into the wall.
Yes. Argentine and Coastal Brown ants both establish colonies inside wall cavities, particularly where there is moisture from plumbing or condensation. Our technicians are finding this more often in Melbourne homes, particularly during and after wet winter periods. A nest inside a wall requires gel bait or dust treatment through the entry point rather than a surface spray, which cannot reach the colony.
Ant fumigation typically refers to any professional ant treatment targeting ants inside and around a building. At Tom’s Pest Control Melbourne, we use targeted gel baits, insecticidal dusts and perimeter spray treatments depending on the species and nest location. These are more effective for ant control than tent fumigation because they can be directed at the colony rather than applied broadly.
Yes. Bull ant and Jack Jumper ant stings are serious. Jack Jumper ant venom causes anaphylactic reactions in sensitised individuals and is a documented cause of anaphylaxis fatalities in Australia. If you have a Bull ant or Jack Jumper ant nest in a garden area used by children or adults with known venom sensitivity, book a professional treatment rather than attempting DIY control. The nest entrance is a clear hole in the soil, usually in a sunny, dry area.
Gel baits and insecticidal dusts applied in wall cavities and along run lines have minimal odour and do not require the family to leave during treatment. External barrier treatments require people and pets to stay off treated surfaces until dry, typically 30 to 60 minutes. Your technician will advise the specific access restrictions before starting any work.
Carpenter ants nest in moist or decaying timber and can cause structural damage over time, particularly in older Melbourne homes with timber framing affected by moisture. Finding carpenter ants inside a wall or subfloor usually indicates a moisture or decay problem that should be assessed by a builder as well as a pest technician. Coastal Brown ants nesting in electrical conduit runs and switchboards can cause short circuits and equipment damage.
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Recent studies have revealed that the earth has over 2.3 million ants per human being. Such an ant population of more than…
Tom’s Pest Control Melbourne provides same-day and next-day ant pest control across all Melbourne suburbs. AEPMA Member No. 133585. Whether you need a quick ant removal or a full wall cavity treatment, we will confirm a time and send a written quote before any work begins.
Call us today on (03) 9034 5957 to connect with our extermination specialists; let us know your requirements and get a free quote. Alternatively, use our contact form to provide to leave your message and get an obligation free quotation.
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