If you have ever thought about "fumigate the house because I might have termites"You're not the only one. It's the most common reaction… and often the least helpful. Before resorting to products on your own, the really important thing is Recognize the signs, assess the risk, and decide how to act sensibly..
Termites can spend months, even years, devouring wood without you noticing anything unusual. By the time the first visible signs appear, the infestation is usually already advanced. That's why it's important to be very clear What symptoms to watch for on doors, windows, walls and floorsand how to proceed without making the problem worse.
Main signs that you might have termites in your home
Termites are social insects that feed on wood. cellulose present in wood and other derived materialsThey prefer humid, temperate, and dark environments, and are experts at going unnoticed. Knowing their tracks well allows you to to detect a pest in time and reduce structural and economic damage.
Below is a very comprehensive overview, compiled from the experience of several professional pest control companies, on The most common signs of infestation and how to differentiate them from other problems such as humidity or woodworm.
Wood that sounds hollow, sinks, or crumbles
One of the clearest and most repeated signs in all cases is the weakened wood that sounds hollow when struckTermites usually eat from the inside out, leaving a thin outer layer of wood or paint virtually intact.
By gently tapping with the knuckles on baseboards, door frames, roof structures, beams or furnitureYou should notice a solid sound. If instead you hear an empty tone or notes that break with minimal pressure, it's very likely that the interior is full of galleries created by worker termites.
This type of damage is typical of the subterranean termitesThese insects, which enter from the ground, devour the wood, leaving almost no trace on the surface. In more advanced stages, the wood can even crumble in your hands when you touch it.
It is also common to notice that Doors or frames look "chewed" on the insidewith bubbles, depressions or very fine cracks that indicate that something is working beneath the layer of varnish or paint.
Changes in texture and deformations in wood
In addition to the hollow sound, termites can cause subtle changes in the texture of the woodAreas that were previously smooth may now have small indentations, bumps, ripples, or a rougher appearance than normal.
This internal deterioration ends up affecting the geometry of the piece: the structure of the wood loses stability and Deformations, bulges, or depressions appearAlthough from the outside it may seem like a simple aesthetic problem, there may be something more underneath. active galleries with thousands of individuals feeding.
When this deformation affects structural elements—for example, wooden beams or pillars—the risk is no longer just economic, but also of safety and stability of the property.
Doors and windows that get stuck for no apparent reason
Another very common clue is that, suddenly, It takes more effort to open or close wooden doors and windowsMany people automatically attribute it to ambient humidity or poor woodwork fit, but sometimes the origin lies in termite activity.
By excavating tunnels and galleries inside, termites alter the consistency of the wood and can cause internal swelling, frame misalignment, or leaf deformationThe result is that the doors scrape the floor, get stuck, and the windows get jammed.
If this change is sudden If it doesn't coincide with an obvious increase in humidity or nearby construction work, it's advisable to check in more detail or request a professional inspection. rule out a termite infestation.
Tunnels or mud ridges in walls, ceilings and foundations
Subterranean species need to move from their nests in the ground to the wood without being exposed to light or dry air. To do this, they build mud tunnels or tubes, also called “mud tubes”, which can be seen as small brown cords attached to surfaces.
These ducts usually appear in foundations, interior or exterior walls, plinths, joints between materials, beams and even ceilings in the form of small mud “stalactites.” They are made with soil, wood scraps, saliva, and excrement, and provide protection, humidity and a safe route for the female workers.
If you touch them with your finger and they break, sometimes you can even see them worker termites circulating insideThis is very clear evidence of activity. It's very important. Do not remove these tubes without first documenting them with photos or videos, as they will help the technician to track the pest's path.
When multiple strands of mud appear connecting the ground, wall, and wooden elements, it is most likely that there is an underground colony near your home which has already begun to feed on its structure.
Small holes and droppings in the wood (drywood termites)
Brianda drywood termitesThe way they act is different from that of the underground ones: the nest is formed directly inside the piece of wood they are attacking, without needing to connect to the ground through clay pipes.
In these scenarios, one can observe tiny holes in the surface of beams, furniture, or framesThese openings are often covered with mud or sawdust-like material. Termites use these openings to expel their excrement to the outside. their excrement in the form of small pellets or granules, with a color similar to that of wood.
These fecal remains can accumulate on the floor, on shelves, or on the furniture itself, and are a very characteristic sign that Something is drilling into the wood from the inside.Although at first glance they may be mistaken for dust or grit, the size, shape and repetition of these little piles are very revealing.
Discarded wings near windows, doors, or floors
During certain times of the year (often in spring or summer), winged reproductive termites emerge in swarms to create new coloniesAfter this nuptial flight, they lose their wings, which are left piled up in certain areas of the house.
If you notice small, translucent wings, very thin and all of similar size near windows, door frames, light inlets, or in floor corners, it's a sign that A colony is being established very close by or even inside the building.
One detail that differentiates them from winged ants is that, in termites, The two pairs of wings are virtually equal in sizeThe body is paler and the waist is not as defined. Finding piles of wings in specific spots inside the house usually indicates intense reproductive activity.
Stains, fine cracks and bubbles in paint or decorative paper
Termites are masters of stealth and, while devouring the inside of walls and furniture, they try to to keep the thin outer layer of paint or varnish intact to remain protected. When they accidentally break that layer, they "repair" it from the inside with mud and saliva.
This behavior causes the appearance of dark spots, fine lines, small bubbles, or areas of bulging paint which, at first glance, may seem like simple moisture or finishing defects.
If you notice these irregularities in areas where you know there is wood, or in partitions that conceal beams, it's worth doing an additional check or seeking professional help, because Behind that minor damage there may be intense termite activity.
Similarly, in some cases the The paint or varnish begins to peel for no clear reasonWhen the surface sinks when lightly pressed with a finger, the interior material may have lost density completely.
Faint noises, creaks or clicks in the wood
Although they are discreet insects, in quiet environments there are times when it is possible to perceive them. a slight creaking, clicking, or repetitive "click" coming from infested walls, ceilings or furniture.
These sounds can originate from two main causes: on the one hand, the worker termites chewing woodAnd on the other hand, soldier termites banging their heads against the tunnels as an alarm signal or communication within the colony.
It's not an easy sign to notice, but if you ever hear strange noises coming from a seemingly solid wooden area, it's worth investigating. Don't ignore it and check for other signs consistent with termites.
Differences between subterranean termites and drywood termites
At home, what interests you most is understanding What general type of termite can you have?because the most effective treatment will depend on it. In simplified terms, the following are mainly observed in homes: subterranean termites y drywood termites.
Subterranean termites build their nest in the ground and attack wood through mud tunnels that cross walls, pillars or foundationsThey are often responsible for significant damage to structures, as they can come from the outside and spread throughout the building.
Drywood termites, on the other hand, live within the piece of wood itself which they use for food and shelter. They don't need as much contact with the ground, so They will not always produce visible mud tubesIts characteristic signs are pellet-like excrement, small holes on the surface, and hollow wood.
Properly identifying the species and the location of the nest is key, because an underground colony spread throughout the subsoil is not treated the same as a more localized focus on a beam or a specific piece of furniture.
What NOT to do when you suspect termites
When you start seeing strange signs, the temptation to spray everything with household insecticide Trying to cover it up "so it's not seen" is a big idea, but it can be a costly mistake. There are several actions that professionals strongly advise against.
First of all, it's not advisable use aerosols or supermarket products about the areas where you see activity. These products can kill some individuals, but also disperse the colony, make it migrate to hidden areas and complicate the eradication work afterwards.
That's not a good idea either. Remove, break or completely clean the mud tubes or any visible traces without having recorded them beforehand. That information (position, direction, size) is invaluable to a specialized technician, who will be able to trace the route and to locate the main focus more precisely.
Another important recommendation is to avoid remove earth, excavate near foundations, or begin renovations in suspicious areas without prior inspection. Any sudden disturbance can encourage termites to expand into new areas of the building in search of security.
And, of course, it's best not to make major decisions—such as lifting floors, replacing all the woodwork, or hiring a "generic fumigation" service—without a a professional diagnosis that confirms what pest it is, how extensive it is, and what method will be truly effective..
Professional termite removal treatments
Once termites are confirmed, the key is not to apply "the strongest" treatment, but the most suitable for the type of termite, the location of the colony, and the affected structureIn the professional sphere, several systems are used, which many companies combine to ensure lasting results.
Bait systems for subterranean termites
The termite baits They are one of the most widespread methods for subterranean termites. Bait stations are installed around the house or at strategic points, containing an attractive material mixed with a slow-acting biocide.
The worker bees feed on this bait and share it with the rest of the colony, including larvae, soldiers and reproductivesOver time, the active substance spreads throughout the population, eventually causing the progressive removal of the nest.
It is a particularly useful system when the colony is not precisely located or when the problem stems from from the subsoil or from a hard-to-access outdoor areaIt is usually discreet, relatively clean, and compatible with normal life in the home.
Biocide injection into wood
When the focus is more localized —for example in visible beams, concrete frames, or structural components— you can choose the direct injection of biocides inside the wood.
The procedure consists of performing strategic drilling and apply the product thoroughly with controlled pressure, so that it reaches internal galleries, chambers, and local nestsAlthough this technique is widely used for woodworm, it can also be very useful in... well-defined internal damage caused by termites.
It is usually combined with complementary surface treatments to create additional protection and prevent new termites from recolonizing the wood.
Surface impregnation and preventive treatments
La surface impregnation It is carried out by applying protective products to exposed or accessible wood, either by brush, roller, or controlled spraying. Its main objective is protect against future attacks or reinforce the work of other more invasive treatments.
It is especially recommended in structural woodsroofs, pergolas, exterior woodwork and areas with a history of wood-boring insect infestationsSometimes it is part of a comprehensive plan that combines soil priming, spot injection and impregnation to create barriers at different levels.
Chemical and physical barriers around the home
Another strategy is the creation of chemical barriers around the structure, applying specific insecticides to the ground or at critical access points. These barriers act as a treated area that the termites must cross to reach the wood, which greatly reduces their chances of survival.
In high-risk areas, they can also be installed Physical barriers (metal sheets, stainless steel mesh and other construction systems) that physically hinder the passage of termites from the ground to the wooden elements.
This type of solution is especially useful in newly built homes, comprehensive renovations or properties bordering gardens, infested land or areas with a history of pests.
Treatments with inert gases and special methods
In very specific and controlled situations, they can be used treatments with inert gases or other more extreme systemsThey are usually reserved for very serious and highly localized infestationsFor example, in closed structures or in high-value pieces where other treatments are not viable.
These procedures require specialized equipment, strict safety conditions, and professional supervisionTherefore, they are not the standard first choice in most homes.
Importance of a professional diagnosis
Although some signs may seem clear, it is difficult to distinguish with certainty between Termites, woodworm, ants, or other moisture problems It's not always that simple. That's why pest control companies emphasize the prior technical inspection.
A good diagnosis includes reviewing critical points of the dwelling, risk zones, wooden structures, foundations and exterior perimetersIn many cases, non-invasive tools (measurements, cameras, etc.) are used to assess the extent of the damage without needing to open everything up suddenly.
With that information, the professional can determine what type of termite is present, where is the main nest, what elements have been affected, and what combination of treatments is most effective in each specific case.
Furthermore, a professional plan is usually accompanied by tracking over timePeriodic inspections of bait stations or barriers, and maintenance recommendations to address the problem never happen again in the future.
Detecting the presence of termites early, understanding their signs, and relying on a professional diagnosis makes all the difference between a controlled problem and a very costly structural repair. Being vigilant about the hollow wood, discarded wings, mud tunnels, deformations, and granular droppings This gives you a key advantage in acting quickly and judiciously, choosing treatments that not only eliminate the current colony, but also protect your home in the long term.
