Best Way to Treat Drywood Termites in Houston
There is no single best method for all drywood termite infestations. The right treatment depends on where the colonies are, how many there are, and whether they are accessible. This guide covers every drywood treatment option and when each one is the right call.
- Spot injection for localized, accessible colonies — no displacement
- Heat treatment and orange oil covered — limitations included
- Inspection determines which method fits your specific situation
Why the Best Drywood Treatment Depends on the Inspection
Drywood termites are one of the few pest problems where method selection matters more than product selection. Unlike subterranean termites — which forage through soil and can be addressed with a perimeter barrier — drywood termites live entirely inside the wood they consume. Treatment must physically reach the colony. There is no product that works from a distance or through indirect contact.
This means the first and most important step is locating every active colony in the structure. A treatment plan built on incomplete inspection will leave active colonies untouched, and those colonies will continue producing frass and expanding into new wood. The method itself is secondary to getting the location mapping right.
Three methods are commonly discussed for drywood termite treatment: spot injection, localized heat, and orange oil. Each has legitimate applications and real limitations that are worth understanding before accepting any recommendation.
How Each Drywood Treatment Method Works
Method selection is the critical decision — each works through a different mechanism with different reach.
- 1
Spot Injection
Small holes are drilled into confirmed infested wood and licensed termiticide is injected to reach the colony. Effective for accessible, identified colonies in frames, trim, and exposed structural members. No displacement required.
- 2
Localized Heat Treatment
Infested wood is raised to a lethal temperature using heat equipment. Effective for limited accessible areas but impractical for wall cavities, structural framing, or attic applications without significant equipment mobilization.
- 3
Orange Oil (d-Limonene)
Kills drywood termites on direct contact but does not penetrate deeply into wood. Not effective for established colonies inside structural members. Appropriate only for very superficial, newly introduced colonies in thin accessible wood.
Why Spot Treatment Is Right in More Houston Homes Than Companies Assume
Many Houston drywood infestations are assumed to require extensive, invasive treatment before a full inspection has even been performed. In a significant number of cases, the infestation is actually localized to one or two accessible wood members — exactly the kind of infestation spot injection is built to resolve quickly and without disruption.
The problem is that more invasive treatments generate significantly more revenue than spot treatment. A company that defaults to recommending extensive work for any active drywood infestation without mapping the full extent through thorough inspection is not necessarily lying — but it is skipping the diagnostic step that would determine what the infestation actually requires.
The right question for any Houston homeowner with suspected drywood termites is not 'how bad is it?' but 'has a thorough inspection been performed to map all active colonies?' If the inspection was cursory or designed to justify a bigger job rather than to map the infestation accurately, a second opinion from a company that inspects thoroughly before recommending is warranted.
Drywood Termite Treatment Method FAQs
What is the most effective drywood termite treatment?
Does orange oil kill drywood termites?
Is heat treatment effective for drywood termites?
How do I know which treatment my home needs?
Can I treat drywood termites myself?
How long after treatment will frass stop?
Drywood Treatment Method Summary
When each method is appropriate and what it cannot do.
Spot Wood Injection
Best for accessible, identified colonies in window frames, door trim, exposed rafters, or furniture. Not for wall cavities or inaccessible framing. No displacement required.
Localized Heat
Best for small accessible areas reachable by heat equipment. Not practical for wall cavities, structural framing, or attic members that cannot be directly exposed.
Orange Oil
Best only for very superficial, newly introduced colonies in thin accessible wood. Not effective for structural infestations or established colonies inside framing.
Annual Monitoring
Post-treatment protection against new introductions from infested furniture, lumber, or flying swarmers. Catches new colonies before they establish in inaccessible framing.
Inspection First
The most important step in every drywood scenario. Full structural inspection maps all active colonies before any method is selected. Treatment without complete mapping often fails.
What to Expect from a Resolve Drywood Assessment
Honest evaluation of your specific situation — not a default recommendation.
- Full structural inspection before any recommendation — frass mapping, attic check, and all void access
- Spot treatment quoted when accessible infestation confirms it is the appropriate method
- Written quote for the recommended method before any work begins
- Written warranty on all treatments — re-treatment at no charge if activity returns
- Same-day inspections available across Greater Houston
Get a Drywood Termite Assessment for Your Houston Home
The right treatment method is determined after mapping your specific infestation — not before. Same-day inspections available across Greater Houston.