There are about 4,500 species of cockroach known to mankind out of which only 30 are known to occupy human homes of which 4 are widely known. Apparently, they originated from Africa and spread everywhere else. They have flattened bodies with small heads and large compound eyes with mouth-parts at the bottom of their head and two long and flexible antennae. They have two pairs of wings and spines on their legs to help with locomotion. Roaches are mostly nocturnal with the exception of the Asian cockroach. They leave behind a trail of feces to mate or swarm and these feces transmit bacteria.
Cockroaches are extremely capable of carrying diseases and bacteria from one thing to another and might also trigger asthma. They are one of the few insects with a semi-positive impact on the environment. Cockroaches might be one of the most useless creatures on the earth, especially the one's known to humans. It is vital to exterminate cockroaches as soon as possible otherwise, they will survive even further than the existential chart of humanity by causing ailments.