Earlier quoted context omitted.
When you get an infestation, it’s best to just burn everything in the room and then fumigate.
There’s no way to get rid of an infestation? I’ve never had one so I seriously don’t know.
They have a real talent for going unnoticed, even when there are dozens or hundreds of them. People often discover an infestation due to bites or poop smears, not from seeing a live bug at any time.
They mostly come out at night and I think they can hibernate for long periods, like weeks or months. They are quite hard to get rid of once they get into something like a mattress.