Long Island homeowners frequently call us about "bees" in their yard — but more often than not, the culprit is a wasp, yellow jacket, or hornet. The distinction matters because each requires a different approach, and some are far more aggressive than others.
Appearance: Bright yellow and black stripes, about 1/2 inch long, smooth body (no fuzz).
Behavior: Yellow jackets are the most aggressive stinging insects on Long Island. They nest underground (in old rodent burrows, under landscaping stones) or in wall voids and attics. They're attracted to food and sugary drinks, which is why they crash every barbecue.
Danger level: High. Yellow jackets can sting multiple times, will chase perceived threats, and become increasingly aggressive in late summer and fall as their colony reaches peak size (up to 5,000 workers).
What to do: Do not attempt to treat a yellow jacket nest yourself. Ground nests are especially dangerous because disturbing them triggers a mass attack. Call a professional for nest removal.
Appearance: Brownish-red or dark brown with yellow markings, long legs that dangle in flight, about 3/4 inch long.
Behavior: Paper wasps build open, umbrella-shaped nests under eaves, soffits, deck railings, and porch ceilings. They're generally docile and only sting when their nest is directly threatened.
Danger level: Moderate. They'll sting if you accidentally disturb their nest, but they don't chase or swarm like yellow jackets.
What to do: Small nests (fewer than 10 cells) can sometimes be knocked down with a long pole in early spring before the colony grows. Larger nests or nests near high-traffic areas should be professionally removed.
Appearance: Black and white (not yellow), about 3/4 inch long, stocky body.
Behavior: They build large, enclosed paper nests — the classic football-shaped nests you see hanging from tree branches, under eaves, or in bushes. Nests can reach basketball size by late summer.
Danger level: High. Bald-faced hornets are extremely territorial and will attack in numbers if they perceive a threat within 6 feet of their nest. They can also squirt venom into your eyes.
What to do: Never approach a bald-faced hornet nest. These require professional removal with protective equipment. If you discover one, keep children and pets away and call for service immediately.
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