Every action done with a skillchompa consumes one, regardless of the success of the action. Skillchompas grant an additional 10% experience on successful completion of an action and additionally grant experience equivalent to 5% of having successfully completed an action each time an action is attempted unsuccessfully. The skillchompas do not need to be wielded to grant the extra experience, they can be consumed from the inventory. For example, mining coal gives 50 experience normally; using skillchompas gives 2.5 experience each time a player attempts but fails to mine coal and 55 experience when successful.