While termites are stealthy pests, they are not resistant to the power of smell. Some scents have the ability to ward off termites or interfere with their normal functioning, and conducting an internet search on these pests will reveal a number of home remedies that supposedly eliminate them forever. Here is what these remedies really do and do not.
Why Smell Matters to Termites in the First Place
Termites have very poor eyesight and depend almost solely on chemicals to live. These creatures leave out pheromone trails for their colleagues to follow to find sources of food, depend on their sense of smell to differentiate between fellow termites and intruders, and locate their food source, such as cellulose in wood, by smelling it instead of seeing it. This is precisely how some potent scented oils end up confusing termites.
Scents That Genuinely Deter Termites
Cedarwood
The reason for this is that there are certain oils in cedar that the termite finds unappealing. This explains the use of cedar in the construction of furniture and closets because the smell keeps them from sensing the food around them.
Clove Bud Oil
One component that is present in clove oil and has been proven to kill termites is eugenol. In a lab experiment comparing the efficacy of clove and cinnamon oils, it was discovered that they have the potential to repel termites and cause death, depending on the concentration used.
Tea Tree Oil
The antiseptic smell of tea tree interferes with the process of detecting trails for termites since they use their sense of smell to find food sources.
Orange or Citrus Oil
The citrus oil contains the chemical compound d-limonene that can dissolve the exoskeleton of the termites in case of contact, making it an effective deterrent compared to the rest of the chemicals in the list.
Geranium Oil
Not so widely recognized as other substances, but still commonly used in terms of pest control as a deterrent of termites.
Vinegar
Unlike essential oils, which are a form of scent-based deterrent, vinegar is not. However, because of the acidity of vinegar, it is capable of disrupting termite paths when applied directly.
Why These Scents Only Go So Far
The effectiveness of the deterrents lies in the interference with the olfactory system of the termite, which it uses extensively to navigate and communicate. However, in reality, this will only have a short-term and very limited impact on them. Though a couple of drops of clove oil is placed on the windowsill, it cannot prevent the existence of termite colonies beneath the foundation or in the cavity walls of your house due to the fact that the scent cannot be sensed in time. If you're seeing early signs like discarded wings or hollow-sounding wood, a home remedy isn't going to be a long-term fix.
Why Malaysia's Climate Makes This Especially True
Natural repellents evaporate and break down faster in heat and humidity, which is exactly the environment most Malaysian homes sit in year-round. What might offer a few days of deterrence in a drier climate often fades within hours here. Coupled with the problem of DIY solutions struggling against Malaysia's climate, it is apparent that scents would at best only serve to complement and never address the problem. Since monsoons increase moisture levels, this in turn drives subterranean termites towards drier ground inside the building, thus making it possible for the termites to evade even a strong smell barrier altogether.
How to Use Natural Deterrents Safely and Realistically
If you would still like to include these methods into your routine home care activities, there are a couple of useful recommendations to form reasonable expectations:
Apply Frequently
Due to rapid degradation in warm and humid conditions, oils should be reapplied every few days to achieve any effects whatsoever.
Apply Around Possible Entry Points
Instead of applying oils across the entire room, it is recommended to apply it around windowsills, doorways, and all the points of wood-to-soil contact.
Avoid Using Scents Only
Natural deterrents should be used in addition to structural prevention of pest penetration such as wood-to-soil separation.
Recognize When You Should Stop Expecting Results
Consistent use of the substance in question with no visible results means that your problem is too deep for a surface deterrent to handle.
Where Natural Deterrents Actually Make Sense
That being said, they certainly have their uses. These products can be used as a supplementary measure within a general prevention strategy. Using, for instance, cedar oil on furniture or clove oil near window sills during regular maintenance procedures. This will perhaps make it more unattractive for termites searching for a way inside. However, what they cannot achieve is to serve as a substitute for a professional inspection, baits, or soil treatment, since the termites' source of food is out of their range of action.
How Asteric Can Help
If you're relying on natural deterrents because you're not sure whether you actually have a termite problem, that uncertainty is exactly what a proper inspection resolves. Our residential pest control services start with identifying whether there's an active colony before recommending any treatment, so you're not guessing with essential oils while the real problem continues to grow undetected.
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