Every May in Connecticut, the same scene plays out across hundreds of yards from Waterbury to Litchfield. A homeowner walks out to the lawn and sees a swarm of bee-shaped insects hovering close to the grass — dozens of them, sometimes more. The instinct is to call a pest control company. But the answer to "who fixes this" depends on something most people don't realize until they're on the phone with us: those aren't always bees we can treat as a pest control company.

There are two stinging insects Connecticut homeowners frequently confuse this time of year — ground bees and carpenter bees. They look superficially similar, but they live in completely different places, cause different kinds of damage, and require different professionals to handle them. Getting it right the first time saves you a service call.

This guide walks through the visual differences, where each one lives, what kind of damage to expect, and which professional to call. The short version is below, with details further down.

The Quick Difference

Ground bees nest in the soil. You'll see small dirt mounds with a hole in the center, almost like miniature anthills, scattered across dry or sparse patches of lawn. The bees themselves hover low to the ground and disappear into the holes. Carpenter bees, by contrast, drill nearly perfect round holes — about the diameter of a pencil — into untreated wood: deck rails, eaves, fascia boards, fence posts, and pergolas. You'll usually see a single bee guarding the hole and sometimes a small pile of sawdust below it.

If the activity is in the yard, you likely have ground bees and need a lawn care company. If the activity is on the structure, you have carpenter bees and need a pest control company. ProSource handles the second; we'll refer you out for the first.

Ground Bees — What They Are and Who Treats Them

"Ground bees" is a catch-all term for several species of solitary native bees — most often digger bees, mining bees, and sweat bees — that nest in individual burrows in the soil. They're docile, rarely sting, and are actually important pollinators. They're also seasonal: they emerge for two to four weeks in May, mate, lay eggs, and disappear until the following spring. The babies hatch the next year and the cycle repeats.

Because they live in the soil, traditional pest control treatments don't touch them effectively — and most reputable companies, ours included, won't spray broadly into a lawn just to knock them down. The right answer is lawn care: improving soil density, watering more consistently, and overseeding bare patches that the bees are using for nesting. Once the grass thickens, they move on. We refer these calls to trusted local lawn care partners who handle this properly.

Why we won't quote a "ground bee treatment"

When customers call asking us to spray for ground bees, we're honest about the limit of what pest control can do. We could apply a one-time bee treatment for $250, and it would knock some adult bees down — but they'd be back next May, and you'd have spent money on a problem the lawn itself created. We'd rather refer you to the right professional than take a check we don't deserve. That's part of our service philosophy and the reason we're locally owned.

Carpenter Bees — What They Are and Why They Matter

Carpenter bees look like large bumblebees but with a shiny, hairless black abdomen instead of the fuzzy yellow one. The males hover aggressively around their nesting site, which makes them seem dangerous — but male carpenter bees can't sting. The females can, though they rarely do unless directly handled. The real concern with carpenter bees isn't the sting. It's the wood damage.

Each female bores a half-inch round entrance hole into untreated wood, then tunnels horizontally and creates a series of nesting chambers. A single bee causes minor cosmetic damage. A few seasons of unchecked activity, especially in the same structure year after year, can compromise deck framing, pergola beams, and fascia boards. Woodpeckers can also be attracted to active carpenter bee tunnels and will further damage the wood trying to dig the larvae out.

How ProSource treats carpenter bees in CT

Our approach is to treat the active tunnels directly with a residual dust that the bees pass through as they enter and exit, eliminating the adults and the developing larvae. We then recommend sealing the holes once activity stops, ideally with a wood plug rather than caulk, so the same holes can't be reused next year. For homes with significant exterior wood — fascia, exposed beams, pergolas, large decks — we often suggest the quarterly Total Pest Coverage plan so we're catching carpenter bee activity before damage accumulates each year.

Other Spring Stinging Insects to Know

Two more spring lookalikes are worth flagging. Yellow jackets sometimes nest in old rodent burrows in the ground, which leads people to mistake them for ground bees — but yellow jackets are aggressive, sting repeatedly, and absolutely require pest control treatment. If you see fast-moving black-and-yellow insects entering a single hole rather than scattered burrows, that's a yellow jacket nest, and you should keep distance and call us right away.

Bumblebees, true honey bees, and mason bees can also show up in the yard or near siding. Honey bee swarms in particular are legally protected and need a beekeeper, not a pest control company. We can help identify which one you have if you're unsure — a quick phone description or photo is usually all it takes.

A 30-Second ID Checklist

Ask yourself: Where's the activity? If it's in the lawn, it's ground bees — lawn care. If it's drilled into wood, it's carpenter bees — pest control. Are there multiple entrance holes scattered across an area? Ground bees. A single round hole with a guard bee in front? Carpenter bee. Is the insect glossy black and large? Carpenter bee. Smaller, fuzzy, and disappearing into dirt mounds? Ground bee.

Still unsure? Snap a photo and call us at (203) 405-9856. We'd rather spend two minutes on the phone correctly identifying it than send a truck to the wrong job.

When to Call ProSource

If carpenter bees are tunneling into your home's eaves, deck, or trim, or if you're dealing with wasps, hornets, or yellow jackets anywhere on the property, we handle those same-day or next-day across Greater Waterbury. Free inspection, transparent pricing, money-back guarantee on every visit.

Call ProSource Pest Solutions at (203) 405-9856 or request a free inspection online. Serving Waterbury, Southington, Cheshire, Watertown, Wolcott, Naugatuck, Plymouth, Bristol, and the surrounding towns within 15 miles.