Bring/get/keep something under control - Idioms by The Free Dictionary
bring/get/keep something under control
bring someone or something under one's control
to achieve dominion over someone or something. The dictator was at last able to bring the army under his control. Harry could not bring Ron under his control. Walter could not be brought under Lily's control.
bring/get/keep something under conˈtrol succeed in dealing with something so that it does not cause any harm: It took two hours to bring the fire under control. ♢ Please keep your dog under control!