Bed bugs originate from cave-dwelling bugs that initially fed on bats. When humans began living in caves, these bugs started feeding on humans and then spread as humans moved out and developed civilizations, carrying bed bugs worldwide

. They have been associated with humans for over 3,300 years and are found wherever people gather, including homes, hotels, schools, public transport, and more

. Bed bugs typically come from other infested areas or used furniture. They hitch rides on luggage, purses, backpacks, clothing, and other personal items that come into contact with infested environments

. They can also travel between rooms in multi-unit buildings like apartments and hotels

. Bed bugs are not caused by poor hygiene; they spread mainly through human movement and infested belongings

. Common places where bed bugs are found include the seams of mattresses and bedding, joints of furniture (especially beds), cushions of couches and chairs, cracks in walls or floorboards, electrical sockets, and even inside laptops

. They can survive in clean or dirty environments and infest both low-income and luxury settings alike

. In summary, bed bugs come from infested environments and spread primarily by attaching themselves to people’s belongings as they move between places. Their origin traces back to cave bugs feeding on bats, evolving to feed on humans as our ancestors shared habitats with bats