Silver Bullet Pest ControlCarpenter Bee Treatment, Control & Removal in NJ
Big black-and-yellow bees hovering by the deck, perfectly round holes in the fascia, and sawdust on the porch floor? Those are carpenter bees. Here's how to tell them apart from bumble bees and carpenter ants, how carpenter bee treatment works, and how to keep them from drilling your wood again next spring.
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Text a photo of the bee or the holes to 973-510-2585 — we'll tell you what it is and what we'd recommend.
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What is the best carpenter bee treatment?
The best carpenter bee treatment is to treat the active holes directly, leave them open for a few days so returning bees contact the treatment, then plug and seal the holes and paint the bare wood so new bees don't drill. Spraying the outside of the wood alone rarely works, because the bees and their young are inside the tunnels. Silver Bullet Pest Control is based in Garfield and serves Bergen, Passaic, Essex and Hudson counties — ask us about carpenter bee service at your home; call or text 973-510-2585.
Carpenter bee, bumble bee or carpenter ant?
These three get mixed up all the time. The difference decides what you do next:
| Carpenter bee | Bumble bee | Carpenter ant | |
|---|---|---|---|
| Body | Shiny, mostly hairless black abdomen; fuzzy yellow chest | Fuzzy all over, including the abdomen | Ant with a pinched waist; some winged in spring |
| Where it nests | Tunnels drilled into bare or weathered wood | In the ground, old rodent holes, under sheds | Inside damp or damaged wood in the house |
| What you see | Round 1/2-inch holes, sawdust below | Bees going in and out of a hole in the ground | Fine sawdust-like debris with insect parts, ants indoors |
| Damage to the house | Yes — tunnels grow each year | No | Yes — can hollow out structural wood |
| Stinging | Males can't sting; females rarely do | Will sting if the nest is disturbed | Can bite, don't sting |
Seeing ants and sawdust inside the house is a different problem. Read about carpenter ants. Bees going into the ground? See ground bee removal.
Signs of carpenter bees and the damage they do
Carpenter bees don't eat wood. A female chews a tunnel to lay her eggs, and the tunnel is what causes the damage. Look for:
- Perfectly round holes about half an inch wide, usually on the underside of a board where rain doesn't hit.
- Coarse, pale sawdust piled under the hole or on the deck below.
- Yellowish-brown stains running down the wood under the entrance — that's the bees' waste.
- Large bees hovering near the eaves or the deck in spring. The ones that buzz at your face are usually males, which can't sting.
- Woodpecker holes chopped along a fascia or rail — woodpeckers dig into the tunnels to eat the larvae, and they often do more damage than the bees.
One season of tunnels is mostly cosmetic. The trouble is that carpenter bees come back to the same wood year after year, extending old tunnels and drilling new ones. After several years, fascia boards, rafter tails and deck rails can weaken and let water in, which leads to rot.
Where carpenter bees drill on North Jersey homes
Fascia and eaves
Bare or weathered fascia boards and the soffit edge are the classic spot — sheltered, sunny and easy to drill.
Decks and railings
Unpainted or worn deck rails, pergolas and the undersides of stair stringers.
Porches and trim
Porch ceilings, window and door trim, and wooden shutters on older homes.
Sheds, fences and play sets
Wooden sheds, fence rails and swing sets in the backyard, especially if they've never been painted.
They prefer soft, untreated woods like cedar, pine, redwood and cypress, and wood that's weathered or bare. Painted wood in good condition is drilled far less often.
The carpenter bee year in New Jersey
| Season | What's happening | Best move |
|---|---|---|
| Early spring | Adults that wintered inside old tunnels come out; males guard the area | Watch for activity and fresh sawdust |
| Late spring | Females drill new tunnels or reopen old ones and lay eggs | Treat active holes now |
| Summer | Larvae grow inside the tunnels; woodpeckers may start digging | Don't plug holes with live young inside unless treated |
| Late summer – fall | New adults come out, feed, then return to tunnels to spend the winter | Treat, then plug and seal the holes |
| Winter | Bees are inside the wood | Plan repairs and painting for spring |
Timing matters: plugging untreated holes in summer traps young bees, which simply chew a new exit through your wood.
How carpenter bee treatment works
A good carpenter bee treatment and removal job usually follows these steps:
Find every active hole
Tunnels are often on the underside of boards and up high. Each active entrance needs to be found, not just the obvious one by the door.
Treat inside the tunnel
The treatment goes into the hole, where the bees and larvae are — not just sprayed on the surface of the wood.
Wait a few days
Holes are left open briefly so bees coming and going pass through the treated tunnel.
Plug, seal and finish
Holes are plugged and sealed, and the bare wood is painted or finished so it's less attractive next year.
Ask us about carpenter bee service at your home — text a photo of the holes to 973-510-2585 for a free quote. Badly tunneled boards may need to be replaced; ask us about that when we look.
Carpenter bee control: DIY vs. professional
You can handle a few carpenter bee holes yourself on a low deck rail. Here's how the two compare honestly:
- Hanging traps from the hardware store catch some bees but don't treat the tunnels you already have. They're a supplement, not a fix.
- Surface sprays on the outside of the wood rarely reach the bees inside the tunnel.
- Plugging holes with caulk or a dowel without treating them first just traps bees that chew out another way.
- Working on a ladder at the roofline with bees around your head is how falls happen. High fascia and second-story eaves are the main reason people call a professional.
A professional brings the right equipment for high spots, treats inside the tunnels and can tell you which boards are too far gone. If you do it yourself, treat first, plug second, paint third — in that order.
How to keep carpenter bees from coming back
Paint bare wood
A solid coat of paint is the best deterrent. Clear sealers and light stains help much less.
Fix weathered boards
Repaint or replace peeling fascia and trim before spring, when the bees start looking for nest sites.
Seal old holes in fall
Old tunnels are reused. Treat and plug them after the bees go in for winter, before next season.
Choose tougher materials
When replacing rails or trim, vinyl, aluminum-wrapped or composite boards resist carpenter bees.
Bees also get into gaps around the house that aren't wood. See bee and wasp exclusion and sealing.
Which wood and finishes carpenter bees avoid
| Material or finish | How attractive to carpenter bees |
|---|---|
| Bare cedar, pine, redwood, cypress | Very attractive — the most common targets |
| Weathered or peeling paint | Attractive — the bare wood underneath is easy to drill |
| Clear sealer or light stain | Somewhat less attractive, but still drilled |
| Solid paint in good condition | Much less attractive |
| Pressure-treated lumber | Less attractive, but not immune — especially once it weathers |
| Vinyl, aluminum, composite | Not drilled |
Painting or wrapping the boards they love most — fascia, rafter tails and rail undersides — makes the biggest difference for the money.
Related bee, wasp and wood pest pages
Ask About Carpenter Bee Service
Send a photo of the holes or the bees and tell us where they are — fascia, deck, porch, shed — and how high up.
Why homeowners call us about carpenter bees
- Round holes in the fascia or deck
- Sawdust piling up on the porch
- Woodpeckers chopping at the trim
- Holes too high to reach safely
- Not sure if it's bees, ants or termites
Request Service
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Carpenter Bee Questions
Do carpenter bees sting?
Rarely. Male carpenter bees, the ones that hover and dive at you, have no stinger at all. Females can sting but almost never do unless they're handled or trapped. They're more of a damage problem than a stinging problem.
How do I get rid of carpenter bees for good?
Treat the active holes, wait a few days, then plug and seal them and paint the bare wood. Painting is what makes the biggest long-term difference, because carpenter bees prefer bare and weathered wood and keep returning to old tunnels if they're left open.
What does carpenter bee damage look like?
Look for perfectly round holes about half an inch wide, usually on the underside of fascia, rails or trim, with coarse sawdust below and yellowish stains under the hole. Tunnels turn and run along the grain inside the board, so the damage is bigger than the hole looks.
Can carpenter bees damage my house?
Yes, over time. One season of tunnels is mostly cosmetic, but bees reuse and extend the same tunnels year after year. After several years, fascia, rafter tails and deck rails can weaken, and woodpeckers digging for larvae make it worse and let water in.
When is the best time to treat carpenter bees?
Spring, when females are drilling and active, and again in late summer or early fall when new adults are out. Plugging holes is best done after treatment and before winter, so bees aren't trapped inside to chew a new exit.
Should I plug carpenter bee holes?
Yes, but only after they've been treated. Plugging an untreated hole traps live bees or larvae inside, and they chew right back out through the wood. Treat, wait a few days, then plug with a dowel, wood filler or sealant and paint over it.
Do carpenter bee traps work?
They catch some bees and can help reduce the numbers, but they don't treat the tunnels you already have or protect bare wood. Think of traps as an extra, not the whole solution.
Are carpenter bees good pollinators?
They do visit flowers and help pollinate, which is a good reason to deal only with the ones drilling your house rather than spraying the yard. Treating the tunnels and painting the wood protects your home without targeting bees everywhere.
How much does carpenter bee treatment cost?
It depends on how many holes there are, how high they are and whether boards need to be replaced. A few holes on a low deck rail is a small job; tunnels along a second-story fascia take more time and equipment. Send a photo for a free quote.
Is it carpenter bees or termites?
Carpenter bees make clean round holes on the outside of wood with sawdust below. Termites work hidden inside wood, usually low near the foundation, and leave mud tubes, not holes. If you're unsure, text a photo to 973-510-2585 — we're licensed under NJ License 90568B.
¿Atienden abejas carpinteras?
Sí, pregúntenos por el servicio para abejas carpinteras en su casa. Hablamos español: mande una foto de los agujeros por texto al 973-510-2585 para una cotización gratis.
Carpenter bee help across North Jersey
We're based in Garfield and serve homes across Bergen, Passaic, Essex and Hudson counties.
Updated November 2026 by the Silver Bullet Pest Control team, Garfield, NJ • NJ License 90568B