What do termite mud tubes mean for my house?
Mud tubes are built by termites to travel from the soil to wood without being exposed to air. Their presence means termites are active at that point, and the wood behind or beside the tube should be checked. A tube is a sign to act, not proof of how much damage has been done.
Tubes are often found on a foundation wall, a pier or a crawlspace post. They are fragile and break easily, and a broken tube is rebuilt quickly if the colony is still active, which is why the technician checks for new tubes after the first visit.
A tube on a wall that is hidden behind stored items or a wall covering can be missed. The technician looks in the crawlspace, the basement and the joints where the sill meets the foundation, since that is where a termite route is most often found.
Why do termites come to a house in spring?
Eastern subterranean termites send out winged reproductives, called swarmers, in spring, and the swarm is most often seen on a warm day after rain. The swarm is the colony's way of starting new colonies, and a swarm near a house means a colony is nearby.
The swarm itself is short-lived, and the winged insects shed their wings soon after landing. The discarded wings on a windowsill or near a light fixture are often the first sign a homeowner sees, and they are a useful sample for the technician.
A swarm does not confirm damage in the house. It shows that a colony is active nearby, and the inspection checks whether the colony has found a way into the structure.
Can termites be controlled without treating the soil?
Yes, in some buildings a bait system is used instead of or alongside a soil treatment. The choice depends on the layout, the access to the soil and the findings of the inspection. Both methods aim to reach the colony rather than only the wood above it.
A soil treatment is applied along the foundation and into the voids, and it creates a zone the termites must cross. Where the soil is covered by a patio or a slab, or where the foundation is difficult to reach, the technician may choose bait stations.
The homeowner is told what the work involves, which areas will be disturbed and how the monitoring will be done. That plan is written down so it can be followed and checked on a schedule.
What makes a house more attractive to termites?
Wood in contact with the soil, moisture around the foundation, debris against the wall and a crawlspace that stays damp are the features that draw termites. Correcting them is part of the control, and it reduces the chance of a return even after the colony has been treated.
Firewood, landscape timbers and wood fences that touch the ground give termites a direct route to the house. Raising the wood off the soil or removing it is one of the simplest steps a homeowner can take.
A downspout that discharges against the foundation keeps the soil wet, and a wet soil line is attractive to termites. Redirecting the water a few feet from the wall reduces the moisture, and the technician notes where that is needed.
Are winged ants the same thing as termite swarmers?
Not always. Winged ants are often mistaken for termites, and the two can be told apart by the body shape and the wings. Termite swarmers have a thick waist and wings of equal length, while winged ants have a pinched waist and unequal wings.
A sample of the insects, or the wings, can be shown to the technician, who will check them under a hand lens. The check is quick, and it prevents unnecessary treatment or the reverse, a missed colony.
Winged ants are common in spring and are rarely a sign of structural damage. The termite inspection covers what is looked at when a homeowner wants a check at sale or after a sighting.