Bed bugs diapause – this is where the bed bugs can lie dormant for a year or even more. Bed bugs may go into diapause if their food source is removed. Therefore, you must ensure that you sleep in your bed after a chemical treatment. Basically, by being in the bed, you will attract the surviving bed bugs to come out and into contact with pesticides. If a human is absent, the bed bugs will either try to find a new source of food by leaving the room or will enter diapause.