Depends on what you're up against. Some of 'em got simple killing verses or sutras that are effective, others ya gotta hit until they stop movin'. Most of 'em got weaknesses, it's just a matter of figuring out what's effective.

[So... stabbing them a lot is close enough for a lot of them.]

Some of 'em are too big or are immortal, so it's more of a seal them than kill 'em deal.