I understand many older people get them buying second hand stuff at a well known business. I don’t want to offend or admit to seeing it happen to a sweet old lady trying to stretch a dollar.
People have a lot of shame hang-ups about bugs.
Bed bugs weren’t bed bugs before they were bed bugs, however. They were just another animal parasite.
There are predators of these things too, like centipedes and some spiders. Even cockroaches will eat them, making for an interesting competition in urban areas.
But our modern sanitation has gotten so good, ironically, that when people still do see bothersome bugs, they go EEK!
See my post #24 for a horrible bed bug story.
How did you know? Try to save a buck & wind up spending a hundred so far!