How much does it cost to treat carpenter bee damage on a deck or fascia?

Cost depends on how many entrance holes are found and whether sealing and painting is included alongside treatment and plugging. A small, first-year infestation costs far less to address than boards with years of accumulated gallery reuse.

Will the bees actually sting my kids or pets on the deck?

The aggressive hovering behavior comes from males, which have no stinger and cannot sting at all. Females can sting but are non-aggressive and rarely do so unless directly handled.

How long does treatment take before the bees are gone?

Treatment of active galleries typically resolves visible activity within a short period after application, though plugging and painting should wait until treatment has had time to take effect. A seasonal follow-up before the next spring emergence confirms the work held.

Can I just fill the holes myself without calling anyone?

You can, but plugging an untreated, active gallery can trap a bee inside that then chews a new exit elsewhere rather than solving the problem. Treating first, then plugging and painting, is the sequence that actually prevents recurrence.

Wood-destroying organisms

Carpenter Bee Control in Hampton Roads

Perfectly round half-inch holes in fascia, decks, and railings.

Xylocopa virginica

Carpenter Bee specimen photograph for Hampton Roads pest identification — Carpenter BeeXylocopa virginica

Adult size: 3/4" – 1"
Color: Shiny black abdomen, yellow thorax
Group size: Solitary, but sites are reused
Lifespan: About 1 year

Carpenter bees are easy to misidentify from a distance since they resemble bumblebees, but a closer look shows a shiny, hairless black abdomen rather than the fuzzy yellow-and-black pattern of a true bumblebee. The males are the ones homeowners usually notice first, hovering aggressively near a deck or eave and darting at anyone who walks past, but males have no stinger at all and the behavior is pure bluff. Females do the actual damage, boring perfectly round, half-inch entrance holes into unpainted or weathered softwood to create nesting galleries.

Untreated and weathered exterior softwood is essentially everywhere across the region's housing stock, fascia boards, deck railings, pergolas, unpainted trim, and that widespread availability of suitable wood combines with a long warm season here to give carpenter bees an extended active period compared to cooler climates. A single female typically excavates a tunnel a few inches deep before turning at a right angle to create a longer gallery running with the wood grain, and the same gallery is often reused and extended by successive generations, which is why damage tends to concentrate in the same boards year after year rather than spreading randomly.

The damage itself is rarely structural in a single season, but the cumulative effect on a deck railing or fascia board that gets reused for several years running can be significant, and the entrance holes also invite secondary problems, since woodpeckers frequently target the larvae inside carpenter bee galleries and cause additional exterior damage while foraging.

How to identify carpenter bee

Looks like a bumblebee with a shiny, hairless black abdomen. Males hover aggressively but cannot sting. Round entrance holes appear on unpainted or weathered softwood, usually on the underside of trim and rails.

When carpenter bee activity peaks

Boring and hovering start with the first warm April days and run hard through June.

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May — activity index 95 / 100 (annual peak)

Carpenter Bee biology and life cycle

Adult carpenter bees overwinter inside old tunnels and emerge in spring to mate, after which females begin excavating new galleries or reopening and extending existing ones in suitable softwood. Each female provisions a series of individual cells within the tunnel with a mixture of pollen and nectar, lays a single egg in each, and seals the cell before moving on to provision the next one down the tunnel. The larvae develop through summer, and new adults typically emerge by late summer to feed before returning to overwinter in the same or nearby tunnels, completing one generation per year in this region's climate. Because tunnels are reused and extended across generations rather than abandoned, a gallery that starts as a few inches deep can become a foot or more long after several years of continuous reuse, which is part of why longstanding activity in the same board causes more damage than the entrance hole alone would suggest.

When carpenter bee pressure peaks in Hampton Roads

Activity begins as overwintering adults emerge in early spring, typically March into April in this region, and this is when the hovering, territorial males are most conspicuous around eaves, decks, and porch ceilings. Females are most actively excavating new or reused galleries through late spring into early summer, and the long regional warm season keeps this active period stretching further than it would farther north. New adults emerge from galleries in late summer to feed before returning to the same tunnels to overwinter, meaning some activity, though less conspicuous, can be observed into fall as well.

Carpenter Bee threat profile

Structural risk

45/100

Damage to framing, floors and finishes

Health risk

15/100

Bites, stings, allergens and pathogens

Spread rate

35/100

How fast it multiplies once established

DIY difficulty

55/100

How reliably store products fail on it

Does yours match? Interactive ID checklist

0 of 4 traits matched

Tick everything you can actually see.

Why it is in your house

Untreated and weathered exterior softwood is everywhere in this region, and the long warm season gives them an extended active period.

Field notes: carpenter bee you did not know

Fact 01
The hovering, dive-bombing bee at your deck rail is the male — he has no stinger at all.
Fact 02
A perfectly round half-inch hole is drilled at about six millimeters a day.
Fact 03
Woodpeckers will tear open fascia to reach the larvae, turning a small hole into a repair bill.

Signs of carpenter bee activity

Perfectly round, half-inch entrance holes on the underside of fascia, deck rails, or unpainted trim.
Coarse sawdust, called frass, accumulating directly beneath an active entrance hole.
Males hovering aggressively and darting at people near eaves or porch ceilings without ever stinging.
A yellowish staining pattern on the wood surface just below the entrance hole from bee waste.
Woodpecker damage appearing near existing carpenter bee holes as birds forage for larvae inside.
The same boards showing repeated or expanded damage year after year as galleries are reused and extended.

What carpenter bee activity costs you

A single season of carpenter bee activity rarely threatens structural integrity, but repeated reuse and extension of the same galleries over several years can meaningfully weaken a deck railing, fascia board, or trim piece, particularly when woodpecker damage compounds the original tunneling. The aesthetic and maintenance cost also adds up over time, since affected boards develop staining, splitting, and repeated repair needs in the same locations, and left unaddressed, an active nesting area can attract successive generations indefinitely as long as the wood remains unpainted and untreated. The long warm season across Hampton Roads gives carpenter bees more active weeks per year than cooler regions see, which allows the cumulative galley damage to build up somewhat faster on unprotected wood here than it would farther north.

What actually removes it

Treating and plugging active galleries, followed by sealing and painting the exposed softwood so returning generations cannot re-establish.

Quarterly Pest Control

The Guardex carpenter bee treatment plan

01 · Inspection of exterior softwood
A technician inspects fascia, decking, railings, and trim for active and historical entrance holes, noting which galleries show current activity versus old, abandoned tunneling. This distinguishes ongoing infestation from cosmetic damage from prior years.
02 · Treatment and plugging of active galleries
Active galleries are treated to eliminate bees currently inside, then plugged with wood filler or dowels once treatment has taken effect. Plugging prevents the same tunnel from being reopened and reused by a future generation.
03 · Sealing and painting exposed softwood
Since carpenter bees strongly prefer unpainted or weathered wood, treated surfaces are sealed and painted to make them far less attractive to returning generations. This single step does more to prevent recurrence than the initial treatment alone.
04 · Seasonal follow-up before spring emergence
A follow-up check ahead of the spring emergence period confirms no new activity has started and that plugged, painted surfaces remain intact. This is typically scheduled as part of an annual or seasonal pest service.

Why store-bought products usually fail

Homeowners can sometimes treat a visible entrance hole with a retail dust product, but the gallery structure inside a piece of wood often runs several inches deep and turns at an angle, meaning a surface application at the entrance doesn't always reach bees or larvae further inside the tunnel. Plugging a hole without first treating it can trap an active bee inside, which sometimes chews a new exit elsewhere rather than actually resolving the problem, and skipping the sealing and painting step means even a fully treated gallery remains attractive bare wood for the next generation to reopen. Reaching elevated fascia and eave areas safely also often requires ladder work and equipment that make this a job better suited to a professional visit, particularly when multiple locations around a roofline are involved.

Prevention checklist

Paint or seal exposed exterior softwood, since carpenter bees strongly prefer unpainted or weathered surfaces.
Inspect decks, fascia, and eaves each spring before the primary emergence and excavation period begins.
Fill and treat old, abandoned galleries promptly so they cannot be reopened by a new generation.
Consider composite or treated decking materials for high-exposure areas prone to repeated activity.
Address any existing woodpecker damage near old galleries, since it often signals ongoing larval activity inside.
Schedule treatment and plugging in early spring, before females begin actively excavating new tunnels.

Where carpenter bee pressure runs highest

Virginia Beach, VAHighest

Poquoson, VAHigh

Smithfield, VAElevated

Carrollton, VAElevated

Commonly mistaken for carpenter bee

Carpenter Bee questions we get asked

How much does it cost to treat carpenter bee damage on a deck or fascia?: Cost depends on how many entrance holes are found and whether sealing and painting is included alongside treatment and plugging. A small, first-year infestation costs far less to address than boards with years of accumulated gallery reuse.
Are carpenter bees a big problem in Hampton Roads specifically?: Yes, the region's long warm season and abundance of untreated exterior softwood on decks, fascia, and trim give carpenter bees an extended active period compared to cooler climates. It is one of the more common seasonal calls across Virginia Beach and Chesapeake in spring.
Will the bees actually sting my kids or pets on the deck?: The aggressive hovering behavior comes from males, which have no stinger and cannot sting at all. Females can sting but are non-aggressive and rarely do so unless directly handled.
How long does treatment take before the bees are gone?: Treatment of active galleries typically resolves visible activity within a short period after application, though plugging and painting should wait until treatment has had time to take effect. A seasonal follow-up before the next spring emergence confirms the work held.
Can I just fill the holes myself without calling anyone?: You can, but plugging an untreated, active gallery can trap a bee inside that then chews a new exit elsewhere rather than solving the problem. Treating first, then plugging and painting, is the sequence that actually prevents recurrence.