Which preposition to use with exterminator

of Occurrences 4%

Another, who during his absence had sent home several threats against the life of his father, now not only realized them in person, but was himself, with his own hands, the exterminator of his whole family, mothers, brothers, and sisters, and mingled their blood in one common carnage with that of the aged husband and father.

Which preposition to use with  exterminator