Correctly identifying bed bugs is the first step to stopping them. They're often confused with carpet beetles, bat bugs, fleas, and young cockroaches — all of which require completely different treatments.
Adult bed bugs
Adults are about 4–5 mm long, roughly the size of an apple seed. Unfed, they're flat, oval, and a uniform reddish-brown. After a blood meal they swell into a longer, fatter shape and turn a deeper mahogany red. They have six legs, short antennae, and no functional wings — they cannot fly.
Nymphs (juveniles)
Nymphs hatch about the size of a pinhead and pass through five molts. Before feeding they're nearly translucent or pale yellow, which makes them easy to miss on light-colored bedding. After feeding, the blood meal is visible as a dark spot inside their body.
Eggs
Eggs are tiny — about 1 mm — pearly white, and shaped like a grain of rice. They're glued in clusters into mattress seams, box spring corners, and crevices in furniture. You'll need a flashlight and a magnifier to spot them.
Shed skins and droppings
As nymphs grow they leave behind translucent, brittle skins that hold the bug's shape. Droppings appear as small black or rust-colored dots, often along mattress piping or on the wall behind the headboard.
What they're often mistaken for
Carpet beetles are smaller and rounder with a mottled pattern. Bat bugs look nearly identical but have longer hairs on their pronotum. Cockroach nymphs are darker and faster. Fleas jump; bed bugs never do.
Not sure what you're seeing?
Take a clear photo and contact Sleep Tight Pest Control. Our Chicago technicians can usually confirm or rule out bed bugs from a photo, and we offer free in-home inspections if a closer look is needed.
Ready for a free inspection?
Sleep Tight Pest Control offers same-day inspections and a written guarantee across Chicago and the suburbs.