Fumigation in Berkeley, CA

Local Context

When a Hundred Years of Galleries Are Spread Through the Whole Frame

Fumigation comes up in Berkeley more than in newer Alameda County cities for one reason: the wood has been available to termites for a century. A pre-1930 brown shingle or Craftsman that has never been treated can carry several independent drywood colonies at once — one in the attic ridge, one in a window header, one in the porch beam — because Incisitermes minor establishes from a swarm anywhere a crack in paint exposes bare wood. Treating three accessible pockets leaves the fourth working.

Access is the local complication. Berkeley lots in the hills step down a slope, so a tent has to seal against a foundation that changes elevation across the footprint, and crews often work off stairs and decks rather than flat ground. In Elmwood, Thousand Oaks, and the Claremont blocks the side yards are narrow and the street trees are mature, so tarps have to clear the canopy and the crew has to stage on a tight street. None of that changes the chemistry, but all of it changes the schedule and the prep.

It is also worth knowing what fumigation does not do. Vikane kills what is living in the wood at the time of the treatment and then dissipates completely — there is no residual left behind. So the Section 2 conditions that let the colonies in stay exactly as they were: a leaking gutter over an eave, wood-to-soil contact at a deck post, bare unpainted trim. Fixing those is what keeps the next swarm from starting the process over.