CHENNAI: Tamil Nadu deputy chief minister Udhayanidhi Stalin hit back at AIADMK General Secretary Edappadi K Palaniswami, saying that he was a poisonous mushroom to crouching cockroaches and other ...

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.