These cockroaches tweaked their mating rituals after adapting to pest control

A female cockroach considers accepting a sugary offering from a male cockroach. (Ayako Wada-Katsumata)

Human attempts to kill cockroaches with sugary poison have had an unintended consequence: It has cramped the bugs' sex lives.

But now, some roaches appear to have tweaked the recipe for the sweet substance that males use to woo females — allowing the bugs to be fruitful and multiply once more.