Bed bugs are a pervasive household nuisance that require more than simple cleaning to eliminate

Science · Published 15 October 2026 Swipe more like this →

In short: Bed bugs are increasingly common, with one in five Americans reporting personal experience or knowing someone affected by an infestation. These resilient pests are notoriously difficult to eradicate, hiding in everything from bed frames to loose wallpaper. Understanding their habits is the first step toward reclaiming your living space.

Bed bugs are small, typically measuring around 5mm in length, and can appear in shades of dark yellow, red, or brown. They are masters of concealment, capable of nesting in furniture, mattresses, clothing, behind picture frames, and even under loose wallpaper. Their presence is often signaled by bites on exposed skin, particularly on the face, neck, and arms, which may appear in lines or clusters. While these bites generally resolve within a week, they can cause significant itching, swelling, or, in rare instances, severe allergic reactions known as anaphylaxis.

Identifying an infestation requires vigilance. Beyond the bites themselves, look for small brown spots on bedding or furniture, which are signs of bed bug excrement, or small blood spots left behind after feeding or from accidentally crushing a bug. On lighter skin tones, bites typically manifest as red or pink marks, whereas on black or brown skin, they may appear as purple, red, or brown, making them potentially more difficult to detect. It is a common misconception that these pests only inhabit dirty environments; they are found in both clean and cluttered spaces alike.

Eliminating a bed bug infestation is notoriously challenging, largely because these insects can be resistant to various insecticides and are adept at hiding in hard-to-reach locations. While homeowners can take preventative measures—such as washing bedding at 60C, tumble drying on high heat for at least 30 minutes, or freezing non-washable items for two to three weeks—these DIY efforts are rarely sufficient for complete removal. Professional intervention from local councils or specialized pest control services is strongly recommended. To prevent future issues, avoid keeping clutter near your bed, inspect secondhand furniture thoroughly before bringing it indoors, and carefully check luggage after traveling to areas with known infestations.

General information, not professional advice. Spotted an error? Flag the card or see corrections and complaints.

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