A team of researchers from the University of Sydney believes it has figured out how bed bugs continue to stay one step ahead of those who want them gone – thicker skin.

Bed bugs have a long history of being a nuisance. They also have a reputation of developing resistance to insecticides time and time again. 
A team of researchers from the University of Sydney in Australia believes it has figured out how the pests continue to stay one step ahead of those who want them gone – thicker skin. 
They measured the cuticle thicknesses of bed bugs known to be largely immune to insecticides and those more apt to succumb to the poisons.
They found the specimens with enhanced survival abilities