Oriental Cockroaches are the filthiest. They also reside in sewer lines. They and the American Cockroaches are often introduced into sewers to keep the lines clear of the gunk that can build up and clog the systems. http://www.pestcontrolcenter.com/store

By the early 1950’s bed bugs were nearly eliminated from the North American continent as a result of the widespread use of DDT. Their numbers were so decimated that generations raised after that time thought they were a myth, perpetuated in a nursery rhyme. Unfortunately, bed bugs are very real. The banning of DDT and the marked increase in international travel, have rapidly given us a resurgence of these nasty pests. Their increase started slowly at first, sort of like the front side of a bell curve, but then accelerated and intensified. We now appear to be on the steep and rapidly rising back side of the curve, with no idea of when the population will peak or when the curve will flatten out. Read the full post at: http://pestcontrolcenter.com/blog/?p=455