Straight answers from a licensed New York exterminator and Associate Certified Entomologist (ACE) — serving all five boroughs, in English and Spanish.
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If you keep finding tiny round holes and fine powder on or beneath antique furniture, hardwood floors, or a wine rack, you may have active wood-boring beetles — and the most valuable thing you can do first is find out whether the damage is active or old. Guidance from an Associate Certified Entomologist.
Why powderpost beetles are a costly, chronic problem in older homes
Powderpost beetles attack seasoned hardwoods with open pores — oak, ash, walnut, mahogany, and bamboo — which is why they show up in the things nicer, older homes are full of: antique furniture, hardwood flooring and paneling, wine racks, picture frames, and structural timber in brownstones. Because the larvae develop for years inside the wood, an infestation can smolder quietly and then produce a fresh crop of exit holes long after you thought it was over.
The real reason the problem seems to keep coming back
- Multi-year life cycle. New adults keep emerging from wood that was infested seasons ago, so “it’s back” is often the same generation finishing its cycle.
- Active vs. old confusion. Many homeowners refinish a floor or restore a piece that had only old, inactive damage — or, worse, ignore holes that are actively producing powder.
- Spread to nearby hardwood. Emerging adults can lay eggs in adjacent untreated wood, seeding a floor or another antique.
— Jorge Bedoya, Associate Certified Entomologist (ACE)
How we handle powderpost beetles
- ACE inspection to determine active vs. inactive — the call that decides whether you treat, restore, or leave it alone.
- Targeted, value-appropriate treatment matched to the wood and the piece, with isolation of active items to stop spread.
- Guidance to protect the rest — floors, wine racks, and other antiques — and to monitor for new emergence.
See our general pest control program for ongoing protection of a home full of hardwood and antiques.
What to expect
We inspect, tell you plainly whether the damage is active, and recommend only what the situation and the value of the piece call for — no needless treatment, no missed active infestations. We serve Manhattan and Brooklyn brownstones and collectors in English, Spanish, and Chinese.
A Brooklyn-based, NYSDEC-registered company (Reg. #15140) led by Jorge Bedoya, an Associate Certified Entomologist (ACE). For ants, NYE provides colony-focused ant control matched to the species. ACE-led work comes with a client portal of service reports and photos, fully bilingual service, and no long-term contract.
Powderpost beetle FAQ
How do I know if powderpost beetle damage is active or old?
Fresh, flour-fine sawdust (frass) sifting from small round exit holes is the sign of an active infestation. Clean, empty holes with no new powder are usually old, inactive damage. Telling the two apart is the most important call before you refinish a floor or restore a piece, and it is exactly what an entomologist inspection settles.
Do powderpost beetles spread to other furniture?
They can. Adults emerge, mate, and lay eggs in the pores of nearby untreated hardwood, so an active piece can seed a hardwood floor, a wine rack, or other antiques over successive years. Isolating and treating active items limits the spread.
Why do the holes keep appearing year after year?
Powderpost beetles have a multi-year life cycle inside the wood. Larvae feed unseen for one to several years before emerging as adults, so new exit holes and fresh powder can appear across multiple seasons even when the surface looks treated.
Can antique furniture be saved from powderpost beetles?
Often, yes, if the infestation is caught and correctly diagnosed. The right approach depends on whether the damage is active, the type of wood, and the value of the piece. An accurate ID prevents both needless restoration of old damage and the loss of a valuable piece to active beetles.
What kind of wood do powderpost beetles attack?
They favor hardwoods with large pores, such as oak, ash, walnut, mahogany, and bamboo. That is why antique furniture, hardwood flooring, paneling, wine racks, and picture frames are common targets in older homes.
Why collectors and brownstone owners choose NYE
New York Exterminating is led by Jorge Bedoya, an Associate Certified Entomologist (ACE) — the credential that matters when a wrong call means a ruined heirloom or an unnecessary floor refinishing. We keep our callback rate under 1%. Call (347) 210-4646 for a wood-boring beetle inspection.
