mop-up operation

mop-up operation

Any action or procedure meant to cleanse, eradicate, or resolve any final or lingering loose ends. We've gotten most of the hard work done for the merger—we'll just send our legal team through our accounts on a mop-up operation to make sure everything is in order before the move is finalized. The dictator began a massive mop-up operation after assuming total power, sending troops throughout the country to round up and execute any remaining dissidents.
See also: operation