Banshees are on the first floor of Canifis Slayer Tower, just past hands.
REMEMBER MASKED EARMUFFS / SLAYER HELMET!
They are very weak, but drop the occasional green charm, some higher level herbs, and quite a bit of pure essence.
They are bad xp, a very easy task.
Use magic defence, such as black d'hide, and no food is needed.
banshee banshees
