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Who this is for: Houston homeowners who want to understand the termite risk in their area and how to spot a problem before it becomes structural damage. Key takeaways:
What’s inside:
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If you own a home in Houston, you live in termite territory. That is not an exaggeration. The USDA places Houston squarely in Termite Infestation Probability Zone 1 — the highest risk designation — due to the combination of warm temperatures, high humidity, and rainfall patterns that create near-ideal conditions for subterranean termites year-round.
Every year, termites cause more structural damage to U.S. homes than fire, flood, and wind combined — roughly $5 billion annually. Almost none of it is covered by standard homeowners insurance, because termite damage is considered a preventable maintenance issue.
Here is what is actually living in your soil, and how to know if it has found your house.
Termites in Houston: Two Species, One Major Problem
Houston has two primary termite species that affect residential properties:
Eastern subterranean termites (Reticulitermes flavipes). These are the most common termites in North America. They live in underground colonies and travel through mud tubes to reach wood above ground. A mature colony contains anywhere from 60,000 to several hundred thousand workers. They are widespread throughout Harris County and surrounding areas.
Formosan subterranean termites (Coptotermes formosanus). Introduced to the United States through port cities — including Houston and New Orleans — the Formosan termite is in a different category. A mature Formosan colony can contain several million workers and a single colony can consume up to 13 ounces of wood per day. They also build carton nests above ground, which allows them to infest structures independent of soil contact. Houston has significant Formosan termite populations, particularly in areas near older neighborhoods and mature tree canopy.
Warning Signs of an Active Infestation
Termites are designed to stay hidden. By the time you see obvious structural damage, an infestation has often been active for years. Knowing the earlier signs is the key to catching them before that point:
- Mud tubes. Pencil-width tubes running along foundation walls, piers, exterior siding, or inside crawl spaces. Subterranean termites build these to travel between soil and wood while maintaining the humidity they need to survive.
- Swarmers. Winged termites — often confused with flying ants — emerge from mature colonies in spring to establish new colonies. Finding swarmers inside your home, particularly near windows or light sources, is a strong indicator of an active colony nearby or inside the structure. After swarming, termites shed their wings, so piles of small wings near windowsills are also a sign.
- Hollow-sounding wood. Tap along baseboards, door frames, and wooden structural elements. A hollow sound where solid wood should be indicates internal tunneling.
- Damaged or blistering paint. Termites working inside walls can cause paint to blister or appear water-damaged without any actual water source.
- Tight-fitting doors and windows. As termites damage wood and produce moisture, framing can warp and swell, causing doors and windows to stick.
- Frass. Drywood termites (less common in Houston but present) push fecal pellets out of their galleries. Small piles of what looks like fine wood dust or sand near wood structures can indicate drywood termite activity.
When to Call a Professional
The answer is: do not wait for obvious damage. By the time a homeowner can visually identify structural damage from termites, the problem has already been progressing for a long time.
Annual termite inspections are standard practice for Houston homeowners, particularly those in older neighborhoods, near wooded areas, or in properties that have had previous termite history. A professional inspection takes less than an hour and covers the areas most likely to show early activity — foundation perimeter, crawl spaces, attic framing, and high-moisture areas.
Pest Arrest provides termite inspections and treatment throughout the Houston area. Treatment options include liquid soil treatments, bait systems, and for Formosan colonies with above-ground nests, targeted foam treatments. The right approach depends on the species, the size of the infestation, and the structure of the home.
The most expensive termite damage is the kind that keeps happening while you are not looking. Get the inspection.
Schedule a Termite Inspection with Pest Arrest
pestarrest.net | Houston, TX
Frequently Asked Questions About Termites in Houston
How do I know if I have termites or flying ants?
Both swarm in spring. Key differences: termites have straight antennae, equal-length wings, and a uniform waist. Flying ants have bent antennae, unequal wings (front pair longer than rear), and a pinched waist. If you are unsure, save a specimen and call a pest professional for identification.
Does homeowners insurance cover termite damage?
Standard homeowners insurance policies do not cover termite damage. It is classified as a preventable maintenance issue. Some insurers offer separate pest damage riders; check your policy. This is one reason why annual inspections and early treatment matter — prevention is far less expensive than repair.
How fast can termites damage a house?
It depends on the species and colony size. Eastern subterranean termites cause damage gradually over years. Formosan termites can cause significant structural damage in a matter of months due to their much larger colony sizes. Neither is a slow emergency — but Formosan infestations require faster response.
What does termite treatment involve?
For subterranean termites, the most common treatment is a liquid termiticide applied to the soil around the foundation, creating a treated zone that termites cannot cross. Bait systems are an alternative that work more slowly but with less chemical application. For above-ground Formosan nests, foam treatments are applied directly to nest locations.
How long does termite treatment last?
Liquid treatments typically carry a 5-year label warranty and can provide protection beyond that depending on soil conditions and reapplication. Bait systems require ongoing monitoring to remain effective. Your pest control provider should explain the specific warranty and maintenance requirements for your treatment.
Can I treat termites myself?
Over-the-counter products can provide temporary suppression of small, surface-level termite activity. They are not effective against established subterranean colonies or Formosan infestations. Professional treatment is required for any meaningful, lasting control.
Does Pest Arrest offer termite warranties?
Contact Pest Arrest at pestarrest.net to discuss available treatment options and warranty terms for your specific situation.