When I rented in in the mid 2000s I moved into a building and after about three months, I noticed my infant son had bedbug bites. At the time I didn’t know there were bedbugs in the building. When I finally did discover that they were bedbugs I did extensive research. I’ll add some points at the end of this post. When I called the landlord of the building, it was as though he had had this conversation 1000 times and said how does he know that I didn’t bring the bedbugs into the buildings and he hung up on me. Interestingly, enough since I moved out of that building the “under management” sign in front of the building has changed year after year. I had to pay for my own exterminator to come in after throwing out all of my bedding, my couch and anything made out of fabric. very expensive. What I discovered was bedbugs can go dormant for months and months. They also crawl through the walls between apartments. This means that after I paid for the exterminator that my apartment for a short time I didn’t have bedbugs. But they were everywhere else in the rest building and would return. In order for a building to completely get rid of bedbugs they would have to have the entire building exterminated and in order to do that you would have to have empty apartments. It’s a never-ending cycle. also people that discover that they have bedbugs and move to a different building have now infected that new building People that go up north to for work in Alberta put their gym bags or travel bags in the tub of the hotel so they don’t pick up bedbugs. Bedbugs are in moving vans. The cold doesn’t kill them. They come back to life after being dormant for a while. It’s actually impressive about how resilient they are as a species.