My daughter got them at a friend's apartment, took them home to her shelter home, spread them there, then got a little house and moved them with her.
To keep them from climbing up into your bed(s), you need to put the beds in something that will hold Food grade diatomaceous earth and keep the covers from dragging the floor. That's won't get rid of the bedbugs already in the bed. You need a special mattress cover to keep them out or in.
You can bag up things and put them in a very hot place (like hot car in summer) or cold place.
Foggers just drive them back into cracks and the walls. You'd have to do it many times.
My daughter finally got a professional who tackled them throughout the house, attic, ground floor and basement. Then he returned up to six times looking for evidence that any had survived and did area spraying if necessary.
It's expensive but worth it.
I lived in dread that she or my grandson would drag some over to my house, threw several angry fits, and tried to keep them out. My grandson saw one on his shoe in the car and brushed it off before he came in my house. I've never seen any, but she keeps going back to peoples' places that have had problems with bedbugs or other nasty bugs.
I forget the time if they are kept away from a meal before they will die.
2 months to a year.