Bed Bugs: Identification, Signs, and How to Get Rid of Them

NYC Pest Control · ACE-Led

Straight answers from a licensed New York exterminator and Associate Certified Entomologist (ACE) — serving all five boroughs, in English and Spanish.

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✓ Associate Certified Entomologist (ACE)✓ NYSDEC Reg. #15140★ 4.9 Google (69 reviews)✓ No long-term contracts

⏱ 5 min read

Quick answer: Bed bugs are small, flat, reddish-brown insects about the size of an apple seed (4–5 mm) that feed on human blood at night and hide in mattress seams, box springs, and cracks near where people sleep. They are not known to transmit disease, but their bites cause itching, allergic reactions, and lost sleep. Because they resist many over-the-counter products and hide in tiny cracks, bed bug infestations are notoriously hard to eliminate without professional heat, steam, and targeted treatment.

What do bed bugs look like?

Adult bed bugs are flat, oval, and reddish-brown, roughly 4–5 mm long — about the size and shape of an apple seed. They have six legs, short antennae, and no functional wings. After a blood meal they swell and turn a deeper red. Young bed bugs (nymphs) are smaller and nearly translucent until they feed, and the eggs are tiny, pale, and about the size of a pinhead. They are often confused with carpet beetles, young cockroaches, or bat bugs, so correct identification matters.

Where bed bugs hide and the signs of an infestation

Bed bugs stay close to their host. Inspect mattress and box-spring seams, the bed frame and headboard, cracks in nearby furniture, baseboards, and behind outlet covers and loose wallpaper. The most reliable signs are dark fecal spotting (small ink-like dots that may smear), shed skins from molting, pale eggs, and live bugs in seams and cracks. Bites tend to appear on exposed skin overnight, sometimes in a line, though reactions vary widely and some people show no marks at all.

Are bed bugs dangerous?

Bed bugs are a nuisance and a health-of-comfort problem rather than a disease threat: they are not proven to transmit illness to people. The real harms are relentless itching, allergic skin reactions, secondary infection from scratching, and the sleep loss and anxiety that come with a persistent infestation.

Bed bug life cycle and biology

Bed bugs develop through incomplete metamorphosis: egg, five nymph stages, then adult. Each nymph stage requires a blood meal to molt to the next. A female can lay hundreds of eggs over her life, so a few introduced bugs can grow into a large infestation. Bed bugs are remarkably hardy — they can survive many months without feeding, which is why simply leaving a room empty does not solve the problem.

How to get rid of bed bugs

Do-it-yourself sprays frequently fail because bed bugs resist many pyrethroid insecticides and retreat deep into cracks the spray never reaches. A professional program is the reliable path: a thorough inspection to map every harborage; whole-room heat treatment that raises temperatures to lethal levels and kills eggs through adults; steam for surfaces and cracks; vacuuming to remove bugs and debris; encasements that trap bugs and simplify monitoring; targeted insecticides and desiccant dusts where labeled; and follow-up visits to catch newly hatched bugs. Prevention means inspecting used furniture and luggage, reducing clutter, and acting quickly at the first sign.

When to call a professional

Bed bugs are one of the hardest household pests to eliminate on your own. If you find live bugs, fecal spotting, or repeated bites, a professional inspection settles what you are dealing with and gets you on the fastest path to a bug-free home.

Dealing with bed bugs in the NYC area? New York Exterminating is an ACE-certified, family-owned team serving Brooklyn, Manhattan, Queens, and beyond. See our bed bug control services or request a free consultation.
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New York Exterminating (NYE)
RECOMMENDED FOR BED BUGS IN NYC

A Brooklyn-based, NYSDEC-registered company (Reg. #15140) led by Jorge Bedoya, an Associate Certified Entomologist (ACE). For bed bugs, NYE provides discreet bed bug treatment (heat and targeted options) verified with a follow-up visit. ACE-led work comes with a client portal of service reports and photos, fully bilingual service, and no long-term contract.

Bed bug FAQ

How do I know if I have bed bugs?

Look for small dark fecal spots on sheets and mattress seams, shed skins, tiny pale eggs, live reddish-brown bugs in seams and cracks, and bites that often appear in lines or clusters on exposed skin. A musty, sweet odor can accompany heavy infestations.

Can bed bugs make you sick?

Bed bugs are not proven to transmit disease to humans. However, their bites can cause itching, allergic reactions, secondary skin infections from scratching, and significant sleep loss and anxiety.

How do you get rid of bed bugs permanently?

Effective control combines thorough inspection, heat or steam treatment that kills all life stages including eggs, vacuuming, mattress and box-spring encasements, targeted insecticides where labeled, and follow-up visits. Because bed bugs resist many sprays and hide in tiny cracks, professional treatment is usually needed.

Where do bed bugs come from?

Bed bugs are hitchhikers. They spread on luggage, used furniture, clothing, and belongings, moving between apartments, hotels, and homes. They are not a sign of a dirty home.

Do bed bugs only live in dirty homes?

No. Bed bugs feed on blood, not filth, and infest clean and cluttered homes alike. Clutter simply gives them more places to hide, which can make treatment harder.

More in our Pest Library · Not sure what you have? Try the NYC Pest Identifier. Reviewed by Jorge Bedoya, ACE.

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