eradicator

verb (used with object), e·rad·i·cat·ed, e·rad·i·cat·ing.

1. to remove or destroy utterly; extirpate: to eradicate smallpox throughout the world.
2. to erase by rubbing or by means of a chemical solvent: to eradicate a spot.
3. to pull up by the roots: to eradicate weeds.

verb (tr)

1. to obliterate; stamp out
2. to pull or tear up by the roots