Exterminate
/ɛkˈstəː.mɪ.neɪt/
verb
To kill all of (a population of pests or undesirables), usually intentionally.
“We'll use poison to exterminate the rats.”
To bring a definite end to; finish completely.
“The public school failed to exterminate truancy.”
Synonyms: stamp out, annihilate, eradicate, extermine, uproot