How Long Does Termite Treatment Last?
How long termite treatment lasts depends entirely on the method used. Here's what to realistically expect from each, and what keeps your home protected afterward.
How long termite treatment lasts depends on the method. A subterranean bait-station program works continuously for as long as the stations are serviced each year, while fumigation eliminates the drywood termites present but leaves no residual protection once the tent comes off. Spot treatment protects the specific wood it's applied to, and no termite treatment is permanent — a warranty plus periodic inspections keeps protection current.
“How long will it last?” is the right question to ask before any termite treatment — but the answer depends entirely on which treatment you're getting and what type of termite you have. Here's the honest breakdown.
Subterranean: bait stations that keep working
For subterranean termites, I use in-ground bait stations set around the perimeter and serviced every year, paired with targeted spot treatments at active entry points. Unlike a liquid soil barrier — which is installed once and quietly degrades in the ground over roughly five to ten years with nothing to tell you when it is gone — a serviced station system keeps working for as long as the stations are maintained, and reputable treatments come with a warranty for a set period.
Drywood: fumigation
Fumigation (tenting) is highly effective at eliminating the drywood termites present in the structure at the time — but here's the part people miss: it leaves no residual protection. The day after the tent comes off, a new swarmer could land and start a fresh colony. Fumigation clears what's there; it doesn't prevent what's next, which is why ongoing inspections still matter.
Drywood: spot treatment
A localized spot treatment handles the specific area of drywood it's applied to. It's ideal for catching a contained infestation early, and many spot treatments are warranty-backed. It protects the treated wood rather than blanketing the whole house the way fumigation reaches everything at once — the trade-off is targeted-and-affordable versus whole-structure.
What actually keeps protection going
No termite treatment is permanent, so the real protection is staying ahead of it: a warranty that covers re-treatment, periodic inspections to catch new activity early, and keeping moisture and wood-to-soil contact down so your home stays a hard target. Ask for a free quote or inspection and I'll tell you honestly what your situation needs.
Quick Answers
Quick Answers.
How long does a subterranean bait-station treatment last?
As long as it's serviced. The stations stay in the ground year-round, and every station gets opened, inspected, and re-baited at the annual service visit, so the protection is renewed on schedule instead of quietly expiring. A liquid soil barrier, by contrast, degrades in the ground over the years with nothing to tell you when it's gone — which is exactly why I use serviced stations instead.
Does fumigation protect against future termites?
No. Fumigation eliminates the drywood termites in the structure at the time, but leaves no residual protection — a new colony can start anytime after the tent comes off. That's why inspections still matter after a fumigation.
How long does termite spot treatment last?
Spot treatment protects the specific area of wood it's applied to, and many are warranty-backed. It's ideal for a contained, early infestation; it doesn't blanket the whole structure the way fumigation does.
Do termites come back after treatment?
They can — no treatment makes a home permanently termite-proof. A bait-station program protects only while it's serviced, and a fumigated home can be re-infested by new swarmers. A warranty plus periodic inspections is what keeps you ahead of it.
How often should I have my home inspected after treatment?
Every couple of years is reasonable for most homes, and sooner if you see swarmers, frass or mud tubes. Regular inspections catch new activity while it's still a small, localized fix.
About the Author
Joshua is the owner and licensed operator of ExterMetro Termite and Pest Control in Arcadia, CA. He holds California SPCB Company Registration #8828 (Branch 2 & 3), is a licensed WDO inspector, and has worked San Gabriel Valley homes and businesses for over twelve years — hands-on in the field on every kind of job the valley throws at him.
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Bag a few wings or pellets, snap a photo, and text it to (626) 409-1584 — quotes from photos are free, and the person who answers is the person who does the work.