Termite baiting systems across Greater Darwin.
In-ground baiting stations installed at 10–15m intervals around the building perimeter (and bushland boundary on rural blocks). Termites take bait back to the colony and kill the queen — eliminating the source rather than just blocking the building. Especially effective against Mastotermes on Litchfield acreage, where diffuse colonies frustrate perimeter chemical barriers. Install $2,000–$3,800 urban; $3,500–$7,500 rural acreage with more stations. ~$420–$850/yr monitoring.
How baiting works — and when it’s the right choice.
The mechanism.
A baiting system is a network of plastic in-ground stations around the perimeter of a building. Each station contains a cellulose matrix impregnated with a slow-acting insect-growth-regulator (IGR) toxin — Sentricon uses noviflumuron, Exterra and Trelona use chlorfluazuron. Termites foraging in the soil enter the station, feed on the bait matrix, and carry the toxin back to the colony in their gut. Because IGRs are slow-acting (4–6 weeks before mortality) and termites groom and feed each other, the toxin spreads through the colony before any worker dies. End result: the queen dies, the colony collapses.
Sentricon Always Active vs Exterra vs Trelona.
- Sentricon Always Active — stations contain bait at all times (not just after detection). Worker recruitment is continuous. Annual monitoring sufficient on most jobs. Industry leader; we install this on most Darwin jobs.
- Exterra — monitoring stations + bait cartridges added on detection. Lower upfront cost but requires quarterly monitoring. Better for properties where monitoring access is regular.
- Trelona ATBS — similar always-active design to Sentricon, slightly different chemistry. Used where Sentricon supply chain is tight.
When baiting beats chemical barriers.
- Rural Litchfield acreage with Mastotermes pressure. Chemical perimeter only protects the building; Mastotermes colonies in surrounding bush continue undisturbed. Baiting eliminates the colony.
- Bushland-boundary urban blocks. Nightcliff Coastal Reserve, Howard Springs Nature Park, Marlow Lagoon reserve edge — ambient colony pressure that perimeter chemical doesn’t address.
- Properties where chemical-soil access is restricted. Heavily landscaped, deep concrete, or established gardens where chemical injection would damage existing infrastructure.
- Active infestation response when the colony location is unknown. Bait acts as a homing beacon — we use bait monitoring to find the colony, then treat directly.
- Homes with chemical-sensitive occupants (asthma, environmental sensitivities) — baiting uses far smaller quantities of much-less-volatile chemistry than chemical-soil treatment.
Why baiting is so effective against Mastotermes.
Mastotermes colonies are diffuse — up to 1–2 hectares with multiple satellite nests and no obvious centre. A perimeter chemical barrier protects the building footprint but does nothing to the surrounding colony, which continues to forage. Baiting works differently: the IGR-laced bait gets carried by Mastotermes workers across the entire diffuse colony, killing it from the inside. Sentricon Always Active is registered for Mastotermes treatment and we’ve eliminated Mastotermes infestations on Humpty Doo blocks that had resisted three rounds of chemical-soil injection.
Install and monitoring.
- Stations installed at 10–15m intervals around the perimeter
- Additional stations along bushland boundaries on rural blocks (typically 12–30 stations on 5Ha)
- Annual monitoring on Sentricon Always Active; quarterly on Exterra
- Detection triggers immediate bait replenishment + site report
- Colony elimination typically 8–14 weeks after worker recruitment
- Documented colony elimination certificate for insurance / property file
Where we work.
Free baiting system quote.
Sentricon Always Active install + ongoing monitoring. Free site visit and station-count quote.