The German cockroach is one well-adapted bug. All our attempts to wipe it out is only making it stronger. It's evolved to avoid poison bait laced with glucose — something few living things do.

About 30 different cockroach species live among humans, but the German cockroach (Blattella germanica), which is common throughout the world, is the one most likely to infest buildings.

and LT50s and LC50s were calculated by probit analysis. The LT50s for the Orlando normal strain of German cockroach ranged from 4.47-9.95 days as the concentration of hydramethylnon in the bait ...

Crack-and-crevice treatments were simulated in the presence and absence of German cockroach [Blattella germanica (L.)] feces to evaluate its effect on insecticide efficacy toward the German cockroach.