When you find a bed bug in your bedroom, your first instinct is to never sleep in that room again.  But that is precisely how bed bugs can spread around your home.  Bed bugs are attracted to the carbon dioxide that your body gives off. This is especially true at night when you are in a sedentary position for an extended period of time.  However, when you decide to move to a different room in the home, the bed bugs, if left untreated, will eventually move over to that area of the home. 

Chemicals

Using chemicals is also how bed bugs can spread, especially if you are trying to treat