How to Get Rid of Carpenter Bees: An Ohio Guide

Every spring in Central Ohio, right around the time the dogwoods bloom, the phone starts ringing at our Centerburg shop. Homeowners from Mount Vernon to Westerville notice big, fuzzy bees hovering around the deck — and a scatter of neat round holes drilled into the railing. If that sounds like your place, you're dealing with carpenter bees, and you've come to the right spot. This is our plain-spoken guide to how to get rid of carpenter bees before they turn one season of damage into a multi-year headache. Carpenter bees wake up and get active in Ohio in spring — roughly April through May — as the weather warms. Catch them early and the fix is manageable.

How to Identify Carpenter Bees (and Their Holes)

Carpenter bees are big — about an inch long — and they look a lot like bumblebees, with one easy tell: a carpenter bee has a shiny, hairless black abdomen (the back half), while a bumblebee's whole body is fuzzy. If the rear end looks like a polished black marble, it's a carpenter bee.

The bigger giveaway is the damage. Females drill almost perfectly round holes, about half an inch across — clean enough that they look like someone went at your wood with a drill bit. You'll find them in bare, weathered softwood:

• Deck boards, railings, and stair rails
• Fascia boards, eaves, and soffits
• Siding and trim
• Fence posts and pergolas
• Wooden play sets and swing sets

Look for a small pile of coarse sawdust below the hole, and often a yellowish stain streaking down the wood beneath it.

Are Carpenter Bees Dangerous? Do They Sting?

Here's the honest answer that cuts through a lot of online panic: carpenter bees are mostly bluster. The ones that dive-bomb you near the deck — hovering, buzzing, getting right in your face — are males, and males have no stinger at all. They can't hurt you. Females *can* sting, but they're docile and almost never do unless you grab one or trap it against your skin. So while carpenter bees are a real threat to your wood, they're not much of a threat to your family.

The Damage They Cause Over Time

A single hole isn't a disaster. The problem is that carpenter bees are stubborn and think long-term. Each female drills an entrance hole, then turns and tunnels *with the grain* to carve out a gallery for her eggs. The next year, her offspring come back to the same wood — reusing and expanding those tunnels. Over several seasons, a few holes can branch into feet of hidden galleries inside a single board.

Then comes the second wave: woodpeckers. Birds hear the larvae inside the wood and tear the gallery wide open to eat them, turning a tidy half-inch hole into a ragged, gouged mess. That's how a minor nuisance becomes real structural and cosmetic damage. This is why timing matters.

How to Get Rid of Carpenter Bees: Treat, Then Plug

Getting rid of carpenter bees is a two-step job, and the order matters. Treat first, plug second — if you seal a hole while bees are alive inside, they'll just drill a fresh exit.

1. Treat the holes in spring, when bees are active. Apply an insecticidal dust into each hole (a puffer/duster works well) so the bees track it through the gallery. Do this in the evening, and wear long sleeves and eye protection.
2. Leave the holes open for a few days so bees move in and out and spread the treatment.
3. Plug the holes in fall. Once the gallery is dead, fill each hole with wood putty, a wooden dowel and glue, or caulk. This stops next year's bees from moving back in.
4. Repaint or stain over the patch so the wood is protected and less attractive to future bees.

Skipping the plug step is the most common mistake — untreated, unplugged galleries are an open invitation the following April.

How to Prevent Carpenter Bees in the First Place

The single best prevention trick is simple: carpenter bees strongly prefer bare, weathered, unfinished wood, and tend to avoid wood that's painted, stained, or sealed.

• Paint or stain decks, railings, fascia, and trim — and keep up with it as finishes wear.
• Seal cracks and weathered spots where bare wood is exposed.
• Consider hardwoods or composite for high-target spots like railings and play sets when you're replacing them.
• Walk your perimeter each spring and patch any new holes early.

DIY vs. a Pro — and Why Timing Matters

For a handful of reachable holes on a low deck, a careful homeowner can handle this with dust and patience. Where we earn our keep is when the bees are working two-story eaves and fascia, when the same wood has been hit year after year, or when woodpeckers have already opened things up. High-up work means ladders and overhead spraying — not where you want to be guessing. That's when it pays to bring in professional carpenter bee control — we treat the active nests, seal them properly, and set you up so next spring is quieter. Either way, treat in spring, while the bees are active and before the next generation gets going.

FAQ

Do carpenter bees sting?

Rarely. The aggressive, hovering bees you notice are males, and they have no stinger — they can't sting at all. Females can sting but are very docile and almost never do unless handled.

What's the difference between carpenter bees and bumblebees?

Look at the abdomen. A carpenter bee's is shiny, smooth, and black; a bumblebee's is fuzzy and usually marked with yellow. Carpenter bees nest in wood; bumblebees nest in the ground.

When are carpenter bees most active in Ohio?

In spring, roughly April through May, as temperatures warm. That's when females are drilling and nesting — and the best time to treat them.

Will they come back next year?

If you don't treat and plug the holes, yes. New bees reuse and expand old galleries each spring, which is why plugging the holes in fall is so important.

Call us today at (740) 507-1688 for honest advice and effective carpenter bee control — serving Mount Vernon, Westerville, Delaware, Newark, Sunbury, and the surrounding communities. Get your wood protected before next spring.