The Importance of Regular Inspections for Asian Subterranean Termites

Regular inspections matter for Asian subterranean termites because these termites do their damage out of sight and fast. A colony can feed inside walls for months before a single sign shows up indoors, and by then the repair bill has already grown. An inspection on a schedule is how you find the colony first.

The Asian subterranean termite, Coptotermes gestroi, has spread across South Florida since it was first found in Miami in 1996. This guide explains why inspections are so important for this species, when to schedule them, what a professional checks, what you can watch for between visits and what happens if termites are found.

Why Asian Subterranean Termites Demand Regular Inspections

They Work Fast

According to UF/IFAS, Asian subterranean termite damage can become severe in a relatively short time, especially when a large, mature colony invades a building. UF/IFAS Extension in Monroe County notes that structural damage can occur within six months of an infestation. A once-in-a-while inspection leaves too much time for that kind of damage to build.

They Stay Hidden

Workers travel through underground tunnels and mud tubes and eat wood from the inside, leaving the surface intact. Colonies can fill wall voids and hollowed wood with carton, a nest material of soil and chewed wood. Carton builds up over time, so by the time it is visible, the colony has usually been there for a while.

Their Colonies Are Huge and Far-Reaching

Formosan colonies can contain several million termites, according to UF/IFAS, and Monroe County Extension describes Asian subterranean colonies as often in the millions, with workers foraging up to 300 feet from the central nest. One colony can reach your house from a neighbor’s yard, a tree or a buried stump. If you want to understand why that matters, read how Asian subterranean termites spread through entire neighborhoods.

South Florida Is Their Stronghold

Miami-Dade and Broward were the first counties where both Asian and Formosan subterranean termites were documented established, and a 2026 University of Florida study found the Asian species as far north as Brevard and Hillsborough counties. UF/IFAS stresses that in high-density areas, frequent inspection and preventive treatment are critical for early detection.

How Often and When to Schedule Inspections

FDACS calls an annual termite inspection a must for older homes. For Asian subterranean termites in South Florida, think of once a year as the minimum and time it well.

Asian subterranean termites swarm at dusk or at night, from February through April in Florida, and are attracted to porch and indoor lights. Monroe County Extension notes swarming begins in early March in South Florida and points to that time as a good one to check trees for mud tubes. UF/IFAS also recommends a termite checkup during the broader March to June activity period, when other species swarm too.

For general guidance on frequency across all termite species, see how often you should get a termite inspection.

What a Professional Asian Subterranean Termite Inspection Covers

A thorough inspection follows the termites’ path: from the soil, through the foundation, to the wood. Expect the inspector to check:

• The foundation and slab edges for mud tubes and foraging tubes, including behind shrubs and stored items
• Slab cracks, expansion joints and plumbing penetrations, common entry points from the soil
• The garage, where slab joints and stored cardboard often show activity first
• Wet areas such as under sinks and tubs, around the water heater and near the AC air handler and condensate line
• Door frames, window frames, baseboards and trim for blistered paint, hollow-sounding wood and carton
• The attic, where roof leaks can let colonies build above ground
• Trees, stumps, fences and wood near the house, where colonies can feed and nest
• Boats and docks for owners on the water, since UF/IFAS documented Asian subterranean termites aboard boats in Fort Pierce, Hollywood and Fort Lauderdale

The inspector should also note conditions that invite termites, such as wood touching soil, thick mulch against the wall, sprinklers hitting the house or poor drainage, so you can correct them. Our article on where termite inspectors look covers the full checklist.

What an Inspection Can and Cannot Tell You

An inspection is a careful look at what can be seen. It is not an X-ray of your walls. FDACS notes that inspections may not find termites when they first infest, because termites do their damage behind closed walls.

Florida’s official Wood-Destroying Organisms Inspection Report makes the limits clear. It covers only visible and readily accessible areas, lists the attic, interior, exterior and crawlspace areas that could not be inspected and why, and states that it does not guarantee the absence of wood-destroying organisms and is not a structural damage report.

That is exactly why regular inspections matter. Each one is a snapshot; a series of them, a year apart or less, catches what a single visit misses.

What You Can Check Between Inspections

You live in the house every day, so you are the first line of detection. Watch for:

• Swarmers at dusk around porch lights and windows from February to April
• Shed wings on windowsills, floors and in spider webs, especially in several rooms
• Mud tubes on the foundation, block walls, slab edges and tree bark
• Blistered or bubbling paint over wood, or wood that sounds hollow
• Doors and windows that start to stick without an obvious reason
• Leaks, which create the moisture these termites need above ground

If you find any of these, take photos and call for an inspection rather than disturbing the area. Our guide to telling if you have an Asian subterranean termite infestation shows each sign in detail, and the life cycle of Asian subterranean termites explains why swarm season is such a revealing time.

Monitoring and Bait Station Checks

If your home is protected with in-ground bait stations, the stations themselves are a form of ongoing inspection. They only do that job when they are serviced on schedule, so keep every scheduled visit and ask what was found. UF/IFAS notes that bait takes about 3 months to work through a colony as workers molt and die, so steady servicing matters. For details, read how often termite bait stations should be checked.

What Happens If the Inspector Finds Asian Subterranean Termites

Finding termites early is the goal, and it gives you the most options. UF/IFAS states that control of the Formosan termite requires professional services, and it recommends the same baits and soil treatments for the Asian subterranean termite.

Toro’s termite control service begins with a free inspection by a trained technician, who identifies the species and checks how far the damage goes. For subterranean termites, including the Asian subterranean termite, Toro installs the Sentricon baiting system around the property, with no drilling into the slab and no trenches. Termites carry the bait back to the colony, which is designed to eliminate it, including the queen, and the stations stay in place for year-round protection against new colonies.

Early detection also keeps the repair side of the bill small. To see how costs grow when termites go unnoticed, read the cost of Asian subterranean termite damage. Toro has protected South Florida homes and businesses since 1969, and responds within 24 hours, guaranteed.

Contact Toro today

A free inspection & $25 off your first service

A trained Toro technician inspects your home or business, explains what was found and gives you a clear plan and quote, backed by our 110% Satisfaction Guarantee.

305-594-4767

Schedule My Free InspectionCall Toro Now

Frequently Asked Questions

Educational content. This article is for general information about pests in South Florida and is not medical, legal or professional advice. If you have a bite, sting or allergic reaction, contact your doctor; in an emergency, call 911. Pest problems vary from home to home, so a licensed professional should inspect before treatment. When using any pesticide, always read and follow the product label.

Related articles

What to Expect During a Termite InspectionCommon Termite Mistakes That Cost Homeowners ThousandsWhy Garages Often Show Termite Problems First