Carpenter Bee Treatment for Lake Homes
Perfectly round holes, about the diameter of a pencil, on the underside of a deck rail. Sawdust on the boards below. A big bee hovering at you when you walk out with coffee.
Lake houses get carpenter bees worse than almost anything else out here, for a simple reason: they’re built out of exactly what carpenter bees want. Cedar. Cypress. Unpainted pine. Deck rails, dock posts, pergolas, boathouse beams, and the soffits under a covered porch.
Call (470) 474-2847 — free inspection, price before any work starts.
Plugging the Holes Does Not Work
This is the part most people get wrong, and it’s worth being direct about.
A carpenter bee hole is an entrance. Behind it is a tunnel that runs with the grain, sometimes a foot or more, with chambers off it where larvae develop. Fill the entrance and you’ve sealed larvae inside wood that’s already hollowed out. They emerge somewhere else the following spring, into the same board, and the gallery gets longer.
Worse, the tunnels are where woodpeckers come in. A woodpecker hears larvae in a deck rail and takes the board apart to get at them, and now you have a real repair rather than a cosmetic one.
Treating means getting product into the gallery, letting the adults carry it through, and then sealing — in that order.
How We Treat It
- Inspection. We walk every wood surface: deck rails and undersides, dock and boathouse structures, pergolas, fascia, soffits, eaves, and siding. Active holes look different than old ones, and it matters which is which.
- Treat the galleries. Product goes into the tunnels where the bees actually are, not sprayed across the surface.
- Seal. Once the gallery is clear, entrances get sealed so the same holes aren’t reused next spring.
- Residual barrier. Treated surfaces get a residual so the following season’s bees look somewhere else.
- Follow up. We come back and confirm activity stopped, rather than assuming it did.
Timing
Carpenter bees emerge in spring and the females bore in spring and early summer. The best time to treat is early spring, before the galleries are extended and before eggs are laid.
The second best time is now — an untreated gallery doesn’t get shorter over the winter.
What This Costs
Typical residential treatments run $200 to $500, depending on how much wood there is and how far the galleries have gone. Inspections are free and you get the price before any work starts.
Carpenter bee coverage is also written into our Lake House Plan for second-home owners, along with docks, deck rails, and boathouse beams.
Questions People Ask
Are carpenter bees actually damaging the wood, or are they just annoying?
Both. A single season looks cosmetic. Several seasons of reused and extended galleries in the same rail is structural, and woodpecker damage on top of it is worse than the bees.
Do they sting?
The males hover and look aggressive but can’t sting. Females can, though they rarely do.
Should I just paint everything?
Paint genuinely helps — carpenter bees strongly prefer bare or stained wood over painted. On a cedar or cypress lake house, though, most owners aren’t willing to paint over the look they paid for. That’s fair, and it’s why treatment exists.
Will you treat the dock and boathouse, not just the house?
Yes. On a lake property those are usually where the worst of it is.
How long does treatment take?
Most residential treatments take one to two hours.
We’ll Tell You What You’re Looking At
Call (470) 474-2847.
Related: Lake House Pest Control · Pest Control on Lake Oconee · Carpenter Bee Extermination
Schedule Pest Service
Tell us what you’re seeing and we’ll get back to you within 24 hours. Office hours are Mon–Sun, 8AM–6PM — and we’re available 24/7 for urgent problems, so call (470) 474-2847 if it can’t wait.