Adult bedbugs are 4-5 mm long, rusty reddish-brown coloured, wingless and oval-shaped. They have piercing and sucking mouthparts that they use to feed on the blood of their host (often humans). The presence of bedbugs is often detected by the irritation caused to sleepers when the bedbugs bite and feed.
Bedbugs usually shelter in dark locations in close proximity to where people sleep. This can include cracks and crevices in bed frames, seams of mattresses, behind skirting boards and architraves, behind wallpaper, between floorboards and under carpet. Bedbugs most commonly feed on their host at night in the few hours just before dawn.
Bedbugs are transported from place to place by humans in luggage, second-hand furniture, mattresses, clothing, etc. They can also crawl into adjacent rooms, apartments and houses.