how long can bed bugs live without food
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Bed bugs are small, wingless insects that feed on the blood of humans and animals. These tiny pests are known for their ability to infest homes and cause discomfort to those living in the affected areas. One common question that arises when dealing with a bed bug infestation is how long can bed bugs live without food?

Understanding Bed Bugs

Before delving into the topic of how long bed bugs can survive without food, it is important to understand their life cycle and habits. Bed bugs go through several stages of development, starting as eggs, then nymphs, and finally reaching adulthood. They feed on blood to grow and reproduce, and their bites can cause itching and allergic reactions in some individuals.

Feeding Habits of Bed Bugs

Bed bugs are nocturnal creatures, preferring to feed on their hosts while they are asleep. They are attracted to the warmth and carbon dioxide emitted by humans, making beds and bedrooms their primary feeding grounds. However, they can adapt to other environments as well, such as upholstered furniture, cracks in walls, and even suitcases.

Frequency of Feeding

Adult bed bugs can survive for several months without feeding, depending on various factors such as temperature and humidity levels. However, they usually feed every 5-10 days, and their feeding sessions can last anywhere from a few minutes to 10 minutes.

Amount of Blood Consumed

During a feeding session, a bed bug will consume approximately 7 times its body weight in blood. After feeding, it will retreat to a hiding spot to digest its meal and molt into the next stage of its life cycle.

How Long Can Bed Bugs Live Without Food?

The survival of bed bugs without a blood meal largely depends on environmental conditions. In general, bed bugs can live for several weeks to several months without feeding. However, their lifespan can be greatly affected by factors such as temperature, humidity, and access to a host.

Temperature and Humidity

Bed bugs are resilient pests, but they are sensitive to extreme temperatures and low humidity. In warmer environments, they can survive for shorter periods without a blood meal. On the other hand, in cooler temperatures, their metabolism slows down, allowing them to survive for longer periods without feeding.

Access to a Host

When bed bugs have easy access to a host, such as in an infested home or hotel, their survival rate is higher compared to situations where they have limited opportunities for feeding. If a bed bug cannot find a blood meal within a certain time frame, it will enter a state of hibernation-like dormancy, known as diapause, to conserve energy and survive longer without food.


Q: Can bed bugs survive in an empty house?

A: Yes, bed bugs can survive in an empty house without a blood meal for several months, especially if the temperature and humidity levels are favorable for their survival.

Q: How long can bed bug eggs survive without feeding?

A: Bed bug eggs can survive for up to two weeks without feeding. Once they hatch, the nymphs require a blood meal to continue their development.

Q: Can bed bugs survive in a vacant apartment?

A: Bed bugs can survive in a vacant apartment for several months, as long as they have access to potential hosts. They can hide in cracks, crevices, and even electrical outlets until a new tenant moves in.


Understanding how long bed bugs can live without food is crucial for effective pest control. Although bed bugs can survive for several weeks to months without a blood meal, their survival rate is influenced by factors such as temperature, humidity, and access to a host. If you suspect a bed bug infestation, it is important to take prompt action to prevent their spread and eliminate them from your living spaces.

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