Termite Season in Washington County: What the Swarms Mean and What to Do

The eastern subterranean termite (Reticulitermes flavipes) occurs throughout the eastern United States and is the country’s most economically important wood-destroying insect. It lives in the soil and works at, near or below ground level, reaching structural wood through mud tubes it builds along foundations and piers.

That habit is why the damage stays hidden. Infested timber often looks sound from outside while hollowed within, and a mature colony forages across a property without ever showing itself above the soil line. Finding wood near the base of a wall soft under a screwdriver tip is one of the most common first clues.

The calendar is set by the swarms. Winged reproductives leave the colony from February through April, often after the first warm spring rains, and a swarm indoors is the classic warning sign. Shed wings on windowsills follow within a day.

The climate keeps them working. Fayetteville averages about 47 inches of precipitation a year with a pronounced wet spring peaking in May, and warm, wet springs and hot, humid summers keep insects active roughly seven months of the year. Woodland edges run right up to residential streets across the plateau-mountain seam, so foraging colonies are never far from a foundation.

The housing runs from late-19th-century cottages with crawlspaces and wood-to-soil contact to subdivisions built through the 2020s with irrigation, mulch beds and landscape timbers. Different entry points, same regional pest.

None of these signs means your house has a problem — but each one points to a different next step, and treating the wrong thing is how money gets wasted. Any one of them is worth an inspection before, not after, treatment.

Treatment follows the structure. A liquid soil barrier works around and under the foundation and gives immediate protection. Baiting systems station monitored bait around the perimeter and suit complex foundations, wells or heavy landscaping where drilling is impractical — and both are fitted to what an inspection finds, not chosen off a menu.

A proper termite proposal names the treatment method, the coverage, the warranty terms and how results will be checked. Foundation length, crawlspace access and drilling are what move the price.

The habits that help are unglamorous and effective, and most cost nothing. Leaky gutters, stacked firewood and mulch against the siding all draw foraging colonies toward the house; so does standing moisture at the foundation line.