Interactive Tool

Carpenter bee (Xylocopa virginica)

• Looks like a bumble bee but the abdomen is shiny and hairless, not fuzzy.
• Bores perfectly round half-inch holes into unpainted or weathered wood — fascia, deck rails, porch ceilings, barn boards.
• Males hover aggressively but cannot sting. Females can, and rarely do.
• Real structural damage over years, made worse when woodpeckers open the galleries chasing larvae.
• This one is a legitimate treatment job.

Bumble bee (Bombus spp.)

• Large, round, very fuzzy abdomen.
• Nests in the ground, in old rodent burrows, under sheds, in insulation.
• Important pollinator. Generally not aggressive unless the nest is disturbed.
• Often the right answer is to leave them alone until the colony dies out naturally in fall.
• If it's a honey bee swarm instead, we'll help you find a beekeeper to relocate it.

The Verdict

The fast tell is the abdomen. Shiny and bare means carpenter bee. Fuzzy means bumble bee. And if it's building a papery nest rather than boring a hole, you're looking at a wasp, not a bee at all.

Carpenter ant swarmer (Camponotus pennsylvanicus)

• Elbowed antennae — a distinct bend.
• Pinched waist, narrow in the middle.
• Front wings noticeably longer than the hind wings.
• Excavates wood but does not eat it — leaves smooth sculpted galleries and coarse frass like pencil-sharpener shavings.
• Parent colonies need wood above 15% moisture. Find the leak and you're most of the way there.

Termite swarmer (Reticulitermes flavipes)

• Straight antennae, no bend.
• Parallel-sided waist — no pinch.
• Four wings of equal size.
• Signs are different too: mud tubes on foundation walls, galleries following the wood grain with fecal spotting.
• Shed wings on a windowsill after a spring swarm are a classic tell.

The Verdict

Look at the waist and the wings — those two tells settle it in seconds. Carpenter ants rank number one in Ohio ant inquiries according to OSU Extension, so the odds favour the ant. But the treatment is completely different, so it's worth being sure.

House mouse (Mus musculus)

• Fits through a gap about the size of a dime.
• Nests in wall voids, insulation and stored goods.
• Droppings about the size of a grain of rice.
• Curious — investigates a new trap within a day.
• Light scratching in walls and ceilings after dark.
• Breeds year-round: 3–11 young per litter, 18–21 day gestation.

Norway rat (Rattus norvegicus)

• Needs an opening about the size of a quarter.
• Burrows — along foundations, under sheds and decks — rather than nesting in walls.
• Droppings noticeably larger and capsule-shaped.
• Wary of new objects. This is the big one: a trap that would clear mice in three days catches nothing on rats for a week.
• Heavier, lower sounds. Gnaw damage on hard materials.

The Verdict

If your traps aren't catching anything, that's not a broken program — it's probably rats. They avoid unfamiliar objects for days. Knowing which animal you have changes the entire approach, so start with the droppings.