Bed bug, or Cimex lectularius, is a wingless, blood-sucking insect, parasitic on humans. It is a ﬂat, rusty-brown insect, 5 mm long and 3 mm wide, which has an oﬀensive, never-forgotten smell and cannot ﬂy. The average life is 3–6 months, but it can live for a year without food. The bed bug remains hidden during the day in cracks in walls and ﬂoors, and in beds. It does not transmit any known disease. Eggs hatch out into larvae in 6–10 days, which become adult within about 12 weeks. A temperature of 44 °C kills the adult in an hour. Various agents have been used to disinfect premises, such as sulphur dioxide, ethylene oxide mixed with carbon dioxide, hydrogen cyanide and heavy naphtha, but insecticide is the most eﬀective disinfecting agent.
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