They can travel up to 100 feet for feeding, although they prefer to be 10 to 20 feet from their host. Consider that a very small bedroom is 10 x10 feet. In apartment buildings and condominiums, 100 feet gives them a lot of range which they usually take advantage of by moving both outward horizontally and upward to levels above by way of the wall voids. In a single family home with at least one person, the bedbug would remain very close to their human food source by living in a mattress, box spring, headboard, bed frame, nightstand, etc. If the population increases, the pressure for more food moves them out further and further into the home. This is when the possibility of hitchhiking insects or their eggs increases, and you may spread the infestation outside of the home.