Signs of Bed Bugs in Homes

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Identifying Bed Bugs: Signs, Symptoms, and Inspection Tips

This page outlines the common signs and symptoms of a bed bug infestation and provides guidance on what to do if bed bugs are found in the home or workplace.

When inspecting for bed bugs, focus on the seams of mattresses, cracks, crevices, and other dark, hidden areas where these pests prefer to hide. Because bed bugs avoid light and are more active at night, nighttime inspections can increase the chances of spotting them.

If an infestation is suspected, it’s important to take prompt action to prevent it from spreading.

Early Signs of Bed Bugs

Signs of Bed Bugs

What Do Bed Bugs Look Like and Where Do They Hide?

Bed bugs can grow to about the size and shape of an apple seed. Adult bed bugs are typically brownish in color, while younger ones (nymphs) appear more translucent or pale. After feeding, bed bugs become engorged and may appear darker and more swollen.

These pests tend to nest near sleeping areas, often in wooden bed frames, headboards, nightstands, and linens. However, they can also hide in less obvious places like picture frames, books, closets, and other small crevices.

During early stages of infestation or breeding, bed bugs may be difficult to detect due to their small size and ability to stay hidden. For visual identification, visit Green Heat’s resource on Bed Bugs Pictures to help recognize different life stages.

Bed Bug Signs

Recognizing Bed Bug Fecal Matter

One of the earliest and most visible signs of a bed bug infestation is the presence of fecal matter. These appear as small, dark stains—dried blood—typically found near nesting areas such as mattress seams, box springs, and headboards. However, they can also show up randomly on pillows, bed sheets, and other surfaces.

The appearance of fecal stains often indicates an established infestation. When these signs are present, Green Heat’s technicians can quickly confirm the presence of bed bugs and recommend appropriate treatment.

Green Heat advises individuals to inspect hotel rooms carefully before settling in. Pay particular attention to light-colored surfaces like linens and baseboards, where stains are more noticeable. For a better understanding, watch the following  Bed Bug Fecal Matter

Bed Bug Signs

Bed Bug Bites: What to Know

While bed bug bites are common, they are not a definitive sign of an infestation. Bed bugs do bite, but not everyone shows visible reactions. Individual responses vary—some people develop red, itchy bumps, while others show no symptoms at all.

It’s important to avoid scratching any bites, as this can lead to skin irritation or secondary infections. Unfortunately, because some people do not show visible signs, infestations can go unnoticed and gradually worsen over time.

If you suspect bed bugs—even in the absence of bite marks—it’s best to act quickly. Contact Green Heat for a professional inspection. Early detection can prevent a minor issue from becoming a major problem, saving time, stress, and money in the long run.

Other Bed Bug Signs

Itchy Skin

Bed bug bites are itchy and scratching them may lead to further irritation.

Red Marks

Round, red welts in zigzag lines or small clusters are key signs of bed bugs.

Strong Odour

Bed bugs release strong pheromones, detected accurately by k9 units.

Blood Spots

Specks or spots of blood on bed linens and clothes.

Egg Shells

Hatched eggshells or eggs stuck on the mattress seams or headboard.

Bed Bug Skins

Skin sheds in cracks and crevices next to your bed or furniture.

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Facts About Bed Bugs

How Do You Get Bed Bugs

Prevention Measures

Bed Bug Pictures