Or we could go the Torchwood route and bury him in an airtight lead-lined iron box in a secret archive, so that he'll keep respawning and smothering for eternity.
At the age of five, Skagra decided emphatically that God did not exist. This revelation tends to make most people in the universe who have it react in one of two ways - with relief or with despair. Only Skagra responded to it by thinking, 'Wait a second. That means there's a situation vacant.'