Not all bees on Long Island need the same solution — and treating the wrong species incorrectly can be dangerous or pointless. Learn to identify carpenter bees, honey bees, and bumble bees in Nassau and Suffolk County and what to do about each.
When Long Island homeowners call about “bees,” they are frequently describing entirely different insects that require completely different responses. Yellow jackets — aggressive wasps that commonly nest underground and in wall voids — are the most frequent misidentification. Carpenter bees, which drill into wood and hover aggressively, are often confused with bumble bees. Honey bee swarms alarm homeowners who see thousands of bees clustered on a tree branch or fence post. Each situation has a specific right answer, and the wrong approach is either ineffective or genuinely dangerous.
This guide covers the three most common true bee species encountered by Nassau and Suffolk County homeowners — carpenter bees, honey bees, and bumble bees — and what the correct response is for each.
Carpenter bees are the bee species that cause the most property damage on Long Island. Large — 3/4 to 1 inch — with a shiny, hairless black abdomen and yellow or golden thorax, they are frequently confused with bumble bees (which have a fuzzy, banded abdomen). Female carpenter bees drill perfectly round, 1/2-inch holes into unpainted, unstained, or weathered soft wood to create nesting galleries. The preferred targets in Nassau and Suffolk County homes are fascia boards, deck railings and structural members, wooden pergola timbers, cedar siding, wooden shutters, and unfinished barn wood.
The male carpenter bee — the one you see hovering aggressively and dive-bombing anyone who approaches — has no stinger. His aggressive display is territorial posturing only. The female can sting but almost never does unless physically handled. The real concern with carpenter bees is not the sting; it is the cumulative structural damage.
A single season of drilling creates individual galleries. But carpenter bees return to the same holes year after year, and woodpeckers — which have learned to follow carpenter bee activity across Long Island — excavate the gallery entrances to reach the larvae inside, rapidly enlarging the damage. In Nassau County Cape Cods and Suffolk County colonials with wood decks, pergolas, and cedar-trimmed dormers, three to five seasons of untreated carpenter bee activity combined with woodpecker excavation can destroy structural members that require significant carpentry work to repair.
The most effective treatment for active carpenter bee infestations is dust insecticide applied directly into active holes. The dust kills larvae and returning females on contact and continues working through the gallery system. The critical rule that many homeowners get wrong: treat first, then seal.
Plugging carpenter bee holes before applying treatment — or without applying any treatment — traps surviving larvae inside, prevents the insecticide from reaching the gallery interior, and forces the young bees to chew out through new exit points, creating additional holes and spreading the damage. This is one of the most common homeowner mistakes we see on Long Island and it reliably makes the following season’s infestation worse.
After treatment, holes should be sealed with wood filler and painted or stained. Painted and stained wood is strongly resistant to carpenter bee drilling — they have a marked preference for bare, weathered wood. Long Island homeowners with cedar decks, wooden pergolas, and unpainted fascia boards should consider painting or staining all exposed wood surfaces as the single most cost-effective long-term prevention measure.
There are two effective treatment windows each year. The first is spring, from April through May, when active females are drilling new galleries or re-entering existing ones. Treatment during this window kills females directly and disrupts early-season nesting. The second — and often more effective — window is late summer, from August through September, after the new generation has developed but before they fully emerge and disperse. Treating in late summer allows you to kill the current generation and then seal and paint the holes before winter, denying next spring’s emerging adults their existing gallery entry points.
Fall treatment is particularly valuable for Long Island homeowners with significant prior damage: it addresses the current season’s population, allows complete hole sealing, and resets the surface before the following spring.
Every spring and early summer — typically May through June — established honey bee colonies send out swarms as a natural reproduction event. The original queen leaves with roughly half the colony to find a new home, and the swarm clusters temporarily — on a tree branch, fence post, under a deck eave, or on a shrub — while scout bees search for a suitable permanent nest cavity.
A swarm is one of the most dramatic-looking things a Long Island homeowner can encounter: thousands of bees clustered in a dense mass. It is also the moment when honey bees are at their absolute most docile. Without a nest, brood, or honey stores to defend, the bees have no territorial instinct. A healthy swarm will almost always move on within 24 to 48 hours as scouts locate a new home.
If the swarm is in an inconvenient location and you want it removed rather than waiting, contact the Nassau County Beekeepers Association or the Long Island Beekeepers Club — both have swarm removal networks of local beekeepers who will typically collect and relocate a swarm at no charge. Do not spray a swarm. Spraying triggers defensive behavior, harms a population of genuinely valuable pollinators, and leaves thousands of dead bees to clean up.
When a swarm finds a gap in a soffit, exterior wall, chimney cavity, or the space behind shutters and establishes a full colony, the situation changes significantly. An established colony in a wall may contain 20,000 to 80,000 bees and several pounds of honeycomb and brood. Exterminating the colony without removing the comb creates a serious secondary problem: abandoned honeycomb containing honey and dead larvae melts in summer heat, soaking through wall materials, causing wood rot, attracting other pests — particularly rodents, ants, and wax moths — and emitting foul odors that can persist for years.
For honey bee colonies established inside Long Island home structures, live removal in partnership with a local beekeeper is the recommended approach when access is feasible. The wall or soffit section is opened, all comb and bees are removed, and the cavity is cleaned and repaired. This is more involved than extermination but avoids the long-term damage that abandoned comb creates in Nassau and Suffolk County homes.
Bumble bees are ground-nesting bees that establish colonies in abandoned rodent burrows, cavities under lawn edges, beneath deck boards, and in similar ground-level sites. They are entirely fuzzy with yellow and black banding — the most reliable visual distinction from carpenter bees, which have a smooth, shiny abdomen. Bumble bee colonies are seasonal: the entire colony dies off in fall, and the same location is not reused the following year.
Bumble bees are important native pollinators and relatively docile unless their nest is directly disturbed. If the nest entrance is not in a high-traffic area — not near a walkway, children’s play area, or pet space — the most ecologically responsible approach is to leave it alone through the season and let it die off naturally in fall. If the nest location creates a genuine safety concern, dust insecticide applied to the nest entrance in the evening — when bees are clustered inside — is the most effective treatment approach.
The fastest identification method: look at the abdomen. Carpenter bees have a shiny, hairless, solid black abdomen. Bumble bees have a fuzzy, hairy abdomen with yellow and black banding. Carpenter bees are found hovering individually near wood structures and drilling into fascia, decks, and pergola timbers. Bumble bees are found foraging on garden flowers and near ground-level nest entrances. If you see a large bee hovering around your deck railing or fascia board, it is almost certainly a carpenter bee.
A professional inspection identifies the species, locates the nest or gallery system, determines structural access requirements, and recommends the appropriate treatment. Not every bee situation requires extermination — a swarm is a beekeeper referral, a bumble bee nest in a low-traffic area may require no action, and a honey bee colony in a wall requires a different approach than a carpenter bee infestation in a deck.
The Bugs Stop Here provides bee identification, carpenter bee treatment, and structural honey bee removal service throughout Nassau County — including Hempstead, Mineola, Garden City, Hicksville, Levittown, and Massapequa — and across Suffolk County including Huntington, Babylon, Bay Shore, Islip, Patchogue, Commack, and Smithtown. Call (631) 563-3900 for a free inspection and estimate.
Look at the abdomen. Carpenter bees have a shiny, smooth, hairless black abdomen. Bumble bees have a fuzzy, hairy abdomen with distinct yellow and black banding across the entire body. Carpenter bees are typically found hovering near wood structures like deck railings, fascia boards, and pergola timbers. Bumble bees are found near garden flowers and ground-level nest entrances in lawns or under decks.
Plugging holes without treatment first traps any larvae inside and prevents insecticide from reaching the gallery interior. The surviving larvae will chew new exit holes when they mature, creating additional damage in new locations. Always treat active galleries with dust insecticide first, confirm no emergence activity, then seal and paint the wood.
Honey bees are not protected by law in New York State. However, live removal in partnership with a local beekeeper is strongly preferred for swarms and established colonies whenever feasible. Both Nassau County and Long Island have active beekeeping associations with swarm removal networks that will often relocate swarms at no cost. For established colonies in structures, live removal avoids the secondary damage caused by abandoned honeycomb.
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