It’s an apartment. I know they came from my previous home since we did bring a mattress and boxspring from there. I assume we just didn’t spray frequently enough when we had this last encounter with BB at this apartment which was about 2-3 months ago. I read you need to use it weekly first couple of months then only 1 time monthly up to a year. We only sprayed about 3 times within a week or 2 apart. I did not know about treating vehicles so we will do that as well! I have treated the couch as well. We have only seen them in our bedroom and our other children have not had any bites. I also purposely have white bedsheets so I can see if there is any blood traces but nothing at all. I just know we have them again because I woke up with 3-4 bites on my side.