An item is Bind on Use (BoU; also called "Binds when used") if it becomes Soulbound when first used. This is used for objects that are used but do not need to be equipped. A warning appears before a player uses a Bind on Use item for the first time, asking if the player is sure they want to do so.
Small pets, and other items can be BoU.
Also see[]
- Soulbound
- Bind on Pickup (BoP) or Bind on Acquire (BoA)
- Bind on Equip (BoE)
- Bind to Account (BtA)