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"Gel baits have been found by numerous studies to be very effective, at least in the lab, for German cockroach control," Gordon said.

A team of international scientists, including Virginia Tech entomologist Warren Booth, have solved the 250-year-old origin puzzle of the most prevalent indoor urban pest insect on the planet: the German cockroach.

They confirmed that the German cockroach — a species found worldwide — actually originated in southeast Asia, likely evolving from the Asian cockroach around 2,100 years ago.

The German cockroach is the pet nobody asked for but almost everyone has.

It looks almost identical to the German cockroach, although it has distinctive traits, like an attraction to light, an ability to live outdoors and the power of flight.