Why the Right Termite Treatment Is Important
You may receive two very different termite treatment quotations. One company may recommend installing bait stations around your property. Another may suggest drilling into the floor and injecting liquid termiticide into the soil beneath it. The prices and treatment times may also differ. But why?
The answer depends largely on how termites are entering the property and what the site allows technicians to treat.
The Asian subterranean termite is the most common termite species in built-up areas across Singapore and Malaysia. It is responsible for an estimated 80% to 90% of structural damage caused by insects to buildings. A mature colony can contain three to five million termites within five to seven years, while its tunnel network can extend hundreds of metres from the nest. Singapore’s warm climate also allows termites to remain active throughout the year.
For most properties, termite control comes down to two main approaches: termite baiting and soil treatment. Each works differently and suits different situations.
How Termite Baiting Works
Termite baiting uses the termites’ natural feeding and social behaviour to reach the colony.
A bait station contains cellulose, which is a food source termites naturally feed on, combined with a slow-acting active ingredient. Worker termites find the bait, consume it, and carry the treated material back to the colony. They then pass it to other termites through feeding and contact. Over time, the active ingredient spreads through the colony and helps eliminate it.
There are two main types of termite bait stations:
- In-ground bait stations: Installed in the soil around the building, usually about two to three metres apart. Technicians typically inspect them every one to three months.
- Above-ground bait stations: Installed directly over areas of active termite activity, such as mud tubes, skirting boards, beams and partition walls.
For homeowners, termite baiting is generally less disruptive than soil treatment. There is no drilling, no strong treatment process inside the building, and no need to leave the property for the day.
How Long Does Termite Baiting Take?
The treatment time depends on how quickly termites find and consume the bait and how large the colony is.
In one Malaysian field trial, eight Asian subterranean termite colonies were eliminated between 42 and 77 days after baiting, with an average of 60 days. A study in Penang reported a typical treatment period of four to eight weeks. Across published research on this species, successful colony elimination commonly takes between one and four months.
A Singapore study involving urban trees also reported successful colony elimination using chlorfluazuron bait against three termite species.
One limitation is that termites do not actively seek out bait stations. They find them while foraging. This means baiting may take longer on some properties, especially when termite activity is difficult to intercept.
How Soil Treatment Works
Soil treatment takes a different approach. Instead of using termites to carry an active ingredient back to the colony, it creates a treated zone that termites must cross to reach the building.
A technician applies liquid termiticide to the soil around and beneath the structure. This creates a chemical barrier between the termites and the building.
For new construction, soil treatment can be carried out before the concrete slab is poured. For existing buildings, technicians usually drill holes at set intervals along the perimeter and through the slab. Termiticide is then injected into the soil through these points. After treatment, the holes are sealed with cement or grout.
On a landed property, the number of drill points can be substantial. A full treatment may require around 90 to 130 drill points along a 50-metre perimeter.
Repellent vs non-repellent termiticides
The type of termiticide used also affects how soil treatment works.
| Termiticide type | How it works | Main consideration |
| Repellent | Repels termites when they come into contact with the treated area. | The colony survives and may search for another route into the building. The treated zone must also be applied continuously without gaps. |
| Non-repellent | Termites cannot detect the treatment and may cross the treated area. They can then pick up the active ingredient and transfer it to other termites. | It may take longer to provide full protection, but the treatment can affect termites deeper within the colony. |
Fipronil and imidacloprid are examples of non-repellent termiticides commonly discussed for termite control. Because termites cannot detect these products in the treated soil, they may cross the treated area, pick up the active ingredient and transfer it to nestmates.
The expected lifespan of a treated zone depends on the active ingredient and soil conditions. Fipronil products may carry label claims of up to 10 years under suitable soil conditions, while imidacloprid treatments generally last around five to seven years.
Soil treatment also has limitations. It may perform poorly where the water table is high, and results can differ between pre-construction treatment and corrective treatment on an existing building.
Termite Baiting vs Soil Treatment: Side-by-Side Comparison
The table below summarises the main differences between the two treatment methods.
| Factor | Termite baiting | Soil treatment |
| Main purpose | Targets and helps eliminate the termite colony | Creates a treated zone that helps prevent termites from reaching the building |
| How it works | Worker termites feed on bait and carry the active ingredient back to the colony | Termiticide is applied to the soil to create a treated zone |
| Typical treatment time | Usually weeks to months | Provides protection around treated areas much sooner |
| Best suited for | Properties with limited or no soil access, including many flats | Landed homes with a reachable soil perimeter |
| Disruption | Minimal. No drilling is normally required | More disruptive because drilling may be required |
| Chemical exposure | Small amounts of bait are contained inside stations | Larger volumes of termiticide are applied to the soil |
| Ongoing maintenance | Regular inspections and bait replacement may be required | Reapplication may be needed as the treated zone ages |
| Typical cost | S$1,000 to S$3,000 | S$500 to S$2,000 |
Which Termite Treatment Suits Your Property?
The best option depends on the type of property, the available soil, and where termite activity is found.
HDB Flats and Condominium Units
Many flats and condominium units have limited or no soil access, particularly on upper floors. In these cases, termite baiting or targeted above-ground treatment may be more practical.
Soil treatment also involves drilling, which may not be suitable or possible in every apartment.
Landed Homes
Landed properties usually have more soil around the building and may have several possible termite entry points along the foundation.
This makes them strong candidates for perimeter soil treatment, provided there is enough accessible soil to treat.
Homes Under Construction or Renovation
Soil treatment can be carried out before the concrete slab is poured. This can provide a relatively straightforward way to protect the structure during construction.
Homeowners planning a new build or major reconstruction should discuss termite protection with their contractor early in the project.
Physical termite barriers can also be considered. For example, stainless-steel mesh can be incorporated into the foundation to help block termite entry without relying on chemicals.
Ground-Floor Units With Gardens or Dense Planting
Ground-floor homes with gardens may benefit from in-ground bait stations. These stations can help detect termite activity while the termites are still foraging around the property.
How Much Does Termite Treatment Cost in Singapore?
Termite treatment prices vary depending on the property, treatment method, level of termite activity, and amount of work required.
Typical published market rates include:
| Service | Typical price in Singapore | What it may include |
| Termite inspection | S$80 to S$150 | Inspection of the property for signs of termite activity and possible entry points |
| Termite baiting programme | S$1,000 to S$3,000 | Installation and monitoring of bait stations, bait replacement, and activity reporting |
| Soil treatment | S$500 to S$2,000 | Soil treatment along accessible areas of the property |
| Spot treatment | S$150 to S$500 | Targeted treatment of a localised termite activity area |
Baiting installation and monitoring may also be quoted at around S$800 to S$2,500 or more, depending on the property and treatment plan. The price may cover station installation, monthly to quarterly inspections, bait replacement and termite activity reports.
For a roughly 2,000-square-foot inter-terrace house, a full chemical barrier with a one-year warranty may cost around S$1,500 to S$2,000. A larger bungalow with extensive gardens may cost more than S$3,000 because it may require more drilling and a longer treatment perimeter.
When comparing quotations, look beyond the initial price. Baiting may have a lower upfront cost and cause less disruption, but regular monitoring can continue for several months. These ongoing costs should be included when comparing the total price of each option.
When Termite Baiting and Soil Treatment Are Used Together
For existing buildings, some termite control programmes combine both methods.
The reasoning is straightforward. Baiting targets the active termite colony, while soil treatment helps protect the surrounding structure from future termite entry.
There is also a behavioural reason for combining treatments. Fipronil-treated soil may become less effective as a repellent barrier over time when dead termites build up in the treated area, causing surviving termites to avoid that section. Baiting works differently. In one controlled study, termites continued feeding on bait and their foraging activity later declined across the wider foraging area rather than only around the treated point.
The key distinction is important: killing termites near a building does not necessarily mean that the colony responsible for the infestation has been eliminated.
Five Questions To Ask Before Choosing a Termite Treatment
Before accepting a termite treatment quotation, ask these questions:
- Which termite species is involved, and how far has the infestation spread?
A proper termite inspection should come first. Mud tubes, hollow-sounding timber, and discarded wings can provide different clues about termite activity.
- Is the treatment repellent or non-repellent?
Ask for the active ingredient by name so you know what product is being proposed.
- How many bait stations or drill points are included?
Ask how often the property will be inspected and what ongoing monitoring is included.
- What does warranty cover?
Ask for the warranty terms in writing, including what is covered and for how long.
- What is the company licensed for?
The National Environment Agency’s Vector Control Operator licence covers five vectors: mosquitoes, flies, cockroaches, rats and rat fleas. Termites are not included in this list.
The licence is still useful as a baseline because it indicates that the pest control company is properly registered and legally authorised to handle certain restricted products. However, homeowners should also ask about the company’s specific experience with termite treatment.
Should You Use Supermarket Termite Sprays?
It is better to avoid relying on supermarket sprays as a termite control solution. These products may kill termites that are visible at the time, but they do not address the underground colony. Disturbing an infestation can also cause termite colonies to split and move to another location instead of solving the underlying problem.
Frequently Asked Questions
Which termite treatment works faster?
Soil treatment can provide structural protection more quickly because the treated zone is established directly around the building.
Termite baiting usually takes about one to four months, depending on how quickly termites find and consume the bait and how large the colony is. Its main advantage is that it targets the colony rather than simply creating a treated zone.
Does termite baiting really kill the whole colony?
It can, when worker termites find and feed on the bait and carry the active ingredient back to the colony. Field trials involving Asian subterranean termites have recorded colony elimination in about two months on average.
Will soil treatment damage my flooring?
Soil treatment for an existing building may require holes to be drilled at set intervals through the slab. Once the termiticide has been injected, the holes are sealed with cement or grout.
How long does soil treatment last?
Soil treatment may last between five and 10 years, depending on the active ingredient and soil conditions.
Can termite baiting and soil treatment be used together?
Yes. Combining the two approaches is a common option for some existing buildings, particularly where there is active termite infestation and accessible soil around the structure.
Choosing the Right Termite Treatment
The right termite treatment should be based on your property, not simply the lowest quotation.
For a landed property with accessible soil around the structure, soil treatment may provide long-term protection against termite entry. For flats with limited soil access, or properties where termites are already active inside the building, baiting may be more practical because it can target the colony directly.
The best place to start is a proper termite inspection. This helps determine where the termites are entering, how extensive the activity is and which treatment options are suitable for the property.
Avalon Services offers a free preliminary consultation and inspection, NEA-registered technicians, human-safe products, and a warranty on completed work. Its termite control services cover both baiting and soil treatment, allowing recommendations to be based on the property and the termite activity rather than a single treatment method.
