Collin County has been under construction for twenty years straight. Tens of thousands of wood-framed homes, all going into soil that termites have worked for generations. North DFW sits inside the highest-severity termite pressure zone under the International Residential Code — and most buyers find that out after closing, not before.
Quick answer
Frisco and McKinney fall within Texas's most active subterranean termite zone. Liquid soil treatments and baiting systems are the two primary professional options; the right choice depends on construction type, infestation status, and lot conditions. Annual inspections are standard practice in Collin County.
Dealing with this right now?
If you own a home in Frisco, McKinney, Plano, or anywhere in North DFW, schedule a professional termite inspection with Stampede Pest Control to assess your current risk and protection options.
Why Frisco and McKinney Have High Termite Pressure
Collin County sits in the active range of both native eastern subterranean termites (Reticulitermes flavipes) and, in southern portions of the county, the more destructive Formosan subterranean termite (Coptotermes formosanus). Texas A&M AgriLife Extension classifies the entire DFW metro as a high-activity zone — no part of it is low-risk.
The Blackland Prairie soils that underlie much of Frisco and McKinney are expansive clay soils that crack during dry summers. These cracks create direct pathways for termite forager tubes to reach wood framing from the soil, bypassing surface barriers. The intense development cycle in both cities — where land is cleared, utilities are trenched, and homes are built in rapid succession — also disrupts and redistributes termite populations across new lots.
Signs of Termite Activity in North DFW Homes
Subterranean termites work from the soil up, and because they avoid light and open air, infestations can progress for years before visible damage appears. The most reliable early indicator is mud tubes — pencil-width tunnels made of soil, wood particles, and termite secretions — running along foundation walls, piers, or interior framing in crawl spaces.
In Frisco and McKinney, termite swarms are a common spring event. Termite swarmers (alates) emerge in warm weather, usually between February and April, and are often mistaken for flying ants. The key difference is body shape: termites have a straight waist and equal-length wings; flying ants have a pinched waist and unequal wings.
Other signs include hollow-sounding wood when tapped, paint that bubbles or blisters without moisture exposure, and small piles of frass (termite excrement) near baseboards or window frames.
- Mud tubes along foundation walls, piers, or garage framing
- Swarmers (winged termites) emerging indoors in spring
- Hollow-sounding wood in floors, door frames, or baseboards
- Discarded wings near windowsills after a swarm
- Bubbling or blistering paint in areas without water damage
- Tight-fitting doors or windows that have recently changed
Termite Treatment Options: Liquid vs. Baiting
The two primary professional termite treatment methods are liquid soil treatments (termiticides) and baiting systems. Both are regulated by the EPA and must be applied by licensed pest control professionals.
Liquid termiticide treatment involves applying a chemical barrier in the soil around and beneath a structure's foundation. This can be done as a preventive pre-treat at time of construction or as a remedial treatment after infestation is discovered. Products currently registered for subterranean termite control include both repellent and non-repellent chemistries; non-repellent options are popular because termites cannot detect them and carry the active ingredient back to the colony.
Baiting systems consist of stations installed around the perimeter of a structure, initially containing wood or cellulose monitors. When termite activity is detected, the monitors are replaced with an active bait that foragers carry back to the colony. Baiting systems require regular monitoring visits to be effective and work best as a long-term management strategy rather than a rapid knockdown approach.
New Construction Termite Protection in Frisco and McKinney
The International Residential Code, adopted in Texas, requires new wood-framed construction in high termite pressure zones to include one of several approved protective measures: chemical soil treatment, physical barriers, or approved wood treatments. Most builders in Frisco and McKinney opt for a pre-treat soil application before the concrete slab is poured.
However, builder-applied pre-treats typically carry a warranty of only one year from the time of treatment, and the chemical barrier degrades over time. Homebuyers in Collin County should ask their builder what pre-treat product was used and when it was applied, then plan to establish an ongoing professional termite protection program within one to two years of purchase.
Post-construction landscaping is one of the most common ways termite barriers are compromised — irrigation systems, landscaping trenches, and additions to patios or walkways can disrupt or dilute the original soil treatment.
What a Termite Inspection Covers
A professional wood-destroying insect inspection (WDIR) for a Frisco or McKinney home typically covers accessible foundation walls, interior framing visible from the attic, crawl space (if applicable), garage framing, and visible wood-to-soil contact points such as fence posts, porch columns, and wood mulch beds.
Texas Department of Agriculture licenses pest control applicators in the state, and a WDIR produced by a licensed inspector is typically required by mortgage lenders for real estate transactions. The report identifies evidence of current or previous termite activity and notes conditions that are conducive to infestation, such as wood debris left in crawl spaces or grade-level wood siding.