Additionally,Greater Demons and Black Demons are often found in RuneScape gold crowded locations,where you might have to compete with other players for kills. The lack of good loot and the lengthy kill times make these monsters inefficient for training Slayer.
Spiritual Creatures

Located in the God Wars Dungeon,Spiritual Creatures are infamous for being some of the most annoying monsters in OSRS. Not only do they require special God-Armor to avoid constant attacks from other creatures in the dungeon,but their drop table is equally unremarkable.

These creatures can be incredibly tedious to deal with,especially if you're trying to grind through multiple tasks. Unless you're specifically aiming for Dragon Boots,blocking Spiritual Creatures is a wise decision to save yourself the headache and inefficiency.
Steel Dragons

Steel Dragons are another creature that should be avoided. They are notoriously difficult to kill due to their high defense,strong melee attacks,and dangerous dragonfire breath. To deal with them,you'll need to bring along anti-dragonfire gear,and you'll often find yourself praying Protect from Melee and using Piety for most of RS gold for sale the kill.