An utuku trap is used in trapping within the skill Dungeoneering. Level 30 hunter is required to use this trap. This trap, as well as other traps, is used to hunt creatures of the Bovimastyx family in Daemonheim. Once the trap is laid, the creature sticks it's head in the trap and is decapitated; the player who set the trap will be given an option to skin it. Doing so requires a knife, and the player receives 2-4 hides.
The trap can be made by using a knife on utuku branches. This requires level 33 fletching, and yields 55.2 fletching xp.