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!
Diatomaceous earth:
https://en.m.wikipedia.org/wiki/Diatomaceous_earth
Boric acid:
https://en.m.wikipedia.org/wiki/Boric_acid
Steamers:
http://m.wikihow.com/Kill-Bed-Bugs-With-Steam
Dry ice:
https://www.continentalcarbonic.com/get-rid-of-bed-bugs.html