Can bedbugs live in a room where no people live? - briefly
Bedbugs can survive in an unoccupied room for several months by entering a dormant state or feeding on residual blood sources. Without a human host, reproduction stops and the population gradually diminishes.
Can bedbugs live in a room where no people live? - in detail
Bedbugs require a blood meal to develop and reproduce, but they can endure extended periods without feeding. In the absence of a host, individuals enter a state of reduced metabolic activity known as quiescence. During this phase, they conserve energy and can remain viable for several months.
Typical survival times reported for adult bedbugs in a dormant state range from six to twelve months, depending on environmental conditions. Under optimal temperature (approximately 20 °C–25 °C) and relative humidity (45 %–55 %), individuals may persist close to the upper limit of this range. Cooler temperatures (below 15 °C) extend survival by slowing metabolism, whereas temperatures above 30 °C dramatically increase mortality.
Key factors influencing longevity in an unoccupied space:
- Temperature: low to moderate temperatures prolong survival; extreme heat (> 45 °C) is lethal.
- Humidity: moderate humidity prevents desiccation; very low humidity accelerates water loss.
- Shelter: access to cracks, crevices, or upholstered furnishings provides protection from environmental fluctuations.
- Population density: overcrowding accelerates depletion of stored reserves, shortening survival.
Even without occupants, bedbugs can remain hidden in furniture, wall voids, or carpet padding. If the room is sealed and environmental conditions remain within tolerable limits, the insects may survive long enough to re‑infest once a host returns. Consequently, pest‑management protocols often include treatment of vacant premises and regular monitoring to detect residual populations before re‑occupation.