What does a bedbug infestation look like?

What does a bedbug infestation look like? - briefly

Visible signs include tiny, reddish‑brown insects about the size of an apple seed, along with small dark spotting on bedding, shed skins, and clusters of white eggs. Itchy, red welts often appear in rows or clusters on exposed skin.

What does a bedbug infestation look like? - in detail

Bedbugs reveal their presence through several distinct visual and tactile cues.

Live insects are small, flat, and reddish‑brown, measuring about 4–5 mm in length. Adults are visible to the naked eye, especially when they cluster near seams of mattresses, box springs, headboards, or behind baseboard cracks. Nymphs are lighter in colour and may be seen crawling on fabric or furniture edges.

Exoskeletons appear as pale, translucent shells left behind after molting. These shed skins often accumulate in the same areas where adults hide and can be mistaken for lint or dust.

Stains on bedding, upholstery, or sleepwear indicate blood leakage. Fresh spots are dark red, while older ones dry to a rust‑colored hue. Small, dark specks on sheets or mattress fabric are fecal deposits; they appear as pinpoint dots and may smear when pressed.

A faint, sweet, musty odor can develop in heavily infested spaces. The scent, produced by the insects’ defensive glands, becomes noticeable after prolonged exposure.

Physical evidence on the host includes bite marks. Bites are typically grouped in lines or clusters, often on exposed skin such as arms, shoulders, or the face. The lesions may be raised, reddened, and occasionally itchy, but they do not always cause a reaction.

Key indicators can be listed as follows:

  • Adult bugs or nymphs visible on seams, folds, or crevices
  • Shed exoskeletons (nymphal skins) near hiding spots
  • Dark red or rust‑colored blood spots on linens
  • Tiny black or dark brown fecal specks on fabric
  • Sweet, musty odor in severe cases
  • Clustered bite marks on the skin of occupants

When multiple items from this list appear simultaneously, the likelihood of a bedbug problem is high, warranting immediate inspection and professional remediation.