Wood-boring beetle treatment in Long Beach for powderpost and furniture beetles

Several beetle families bore into wood, and their habits differ enough that the name matters.

• Lyctid powderpost beetles: attack hardwoods such as oak flooring, ash trim and bamboo; flour-fine frass and very small holes; can reinfest dry hardwood
• Anobiid beetles: attack softwood and hardwood with higher moisture, often in crawlspaces; gritty frass with pellets; slow, multi-year life cycle
• Bostrichid beetles: larger holes, often in hardwood lumber or imported bamboo and wicker items; usually limited to the infested piece
• Flat-headed borers: oval holes in new softwood framing; they came in with the lumber and generally do not reinfest seasoned wood

We get many calls from people who found powder on a floor or windowsill and assumed termites. The texture tells the story. Drywood termite pellets are hard, six-sided grains about the size of a sesame seed or smaller, and they roll when you push them with a fingertip. They pile up under oval kick-out holes. Powderpost frass is soft and fine, like flour or baby powder, and smears instead of rolling. Anobiid frass sits between the two, with tiny bun-shaped pellets mixed in powder.

The holes help too. Termites push pellets out of small openings they seal again, so you rarely see a clean open hole. Beetle exit holes stay open and are perfectly round. If you are not sure, save a sample in a small bag and keep it for the inspection. It takes us only a moment to tell them apart with a hand lens.

A surprising number of beetle problems start with an object, not the house. Antique dressers, carved chests, wicker baskets, bamboo blinds and imported hardwood furniture can carry larvae that emerge months or years later. If you see fresh holes and powder in one piece, isolate it from wood floors and other furniture until it is assessed.

Small pieces can sometimes be treated on their own rather than treating the whole house. Larger infestations in finished floors and built-in cabinetry are where whole-structure fumigation comes in, since fumigant gas penetrates finished wood that borate cannot reach. Before buying antiques at estate sales or swap meets, look underneath and inside drawers for bright holes and powder, and walk away from pieces that show both.

The raised-foundation homes of Belmont Heights, Rose Park, California Heights and Wrigley are where anobiid beetles do best. Many of these crawlspaces have bare soil, limited venting and decades-old fir framing that picks up moisture from the ground and the marine air. When we find small round holes and gritty frass on joists, the fix often includes improving crawlspace ventilation or adding a vapor barrier along with borate.

Powderpost beetles turn up in the oak and maple floors of older homes in Bixby Knolls and Los Cerritos, and in homes where reclaimed or imported hardwood flooring was installed during a remodel. In The Plaza, the exposed post-and-beam framing of Cliff May Ranchos sometimes shows beetle holes alongside drywood termite activity, so we check both. Downtown and in Alamitos Beach, we see beetle activity mostly in furniture and bamboo items rather than in condo framing.