Drywood Termite Control in Sacramento
At Sacto Termite Control, we eliminate drywood termites from Sacramento homes and commercial properties using methods matched to the infestation’s location and extent. Drywood termites are Sacramento’s second termite threat after subterranean termites. Unlike subterranean species that travel up from soil, drywood termites fly in from outside and establish colonies directly inside wood. They need no soil contact, no moisture source, and no connection to the ground. That makes them harder to detect and easier to miss until the damage is already done.
Identifying Drywood Termites Before They Spread
The western drywood termite (Incisitermes minor) is Sacramento’s primary drywood species. It swarms from late August through November, with peak activity in September and October. During swarming season, winged reproductive termites fly from existing colonies, shed their wings near light sources, find a wood surface, and begin boring in to start a new colony. A single swarming event can establish multiple new colonies in different areas of the same home.
The earliest and most reliable sign of drywood termites is frass, their fecal pellets. Drywood termites push frass out of their galleries through small kickout holes, less than 2mm in diameter, drilled into the wood surface. The pellets are six-sided, elongated, and roughly the size of a grain of sand. Finding a small pile of these pellets below a window sill, along a baseboard, or near attic framing is a strong indicator of active drywood termite feeding. To confirm activity rather than an old, inactive infestation, sweep the pile clean and check the same spot in 3 to 7 days. If new pellets appear, the colony is active and needs to be treated.
Other signs include hollow-sounding wood when tapped, small surface blisters on wood where galleries run close to the surface, and swarmers or shed wings near windows and light fixtures in late summer or fall. A professional termite inspection using thermal imaging and a probe tool can locate galleries behind walls and inside framing that aren’t visible from the surface.


Spot Treatment vs. Whole-Structure Fumigation: Choosing the Right Method for Your Home
The most important decision in drywood termite control is choosing between localized spot treatment and whole-structure fumigation. Both eliminate drywood termites. The difference is scope, and getting this wrong is costly.
No-tent spot treatment targets a specific, identified colony. We locate the infested wood cavity using thermal imaging and listening devices, drill a small injection hole into the gallery, inject termiticide directly into the colony, and seal the hole. The colony inside that piece of wood is eliminated. Spot treatment is effective, affordable, and causes no disruption to your household. You stay home. The process takes hours, not days.
The limitation of spot treatment is honest and important: it only eliminates the colonies we can find and access. According to the UC Integrated Pest Management Program, drywood termite colonies hidden behind drywall, inside sealed wall cavities, or within framing not accessible from an inspection cannot be confirmed or treated through localized methods. If additional colonies exist in hidden areas, spot treatment leaves them in place. This is not a failure of the method, it is an inherent limitation of any localized approach.
Tent fumigation eliminates this uncertainty. Your home is sealed and filled with fumigant gas for 24 to 48 hours. The gas penetrates every wall cavity, attic space, and sealed area in the structure. All drywood termites, regardless of location, accessibility, or how many colonies are present, are eliminated in a single treatment. You vacate for 2 to 3 days. Fumigation costs more and is more disruptive, but it provides a level of certainty that spot treatment cannot.
We recommend spot treatment when the infestation is clearly isolated to one or two identified, accessible locations. We recommend fumigation when colonies are found in multiple areas, when framing behind walls is suspected, when the home has a history of drywood termite treatment, or when a homeowner needs complete assurance before a real estate transaction. If termite damage repair is also needed, we coordinate treatment and repair in the correct sequence so structural work is done on termite-free wood.
