If rangers witness such action or other improper bear behavior, they may employ aversive conditioning in an attempt to punish the bear, hoping to reverse its behavior. This action must only be taken by trained persons. Aversive conditioning must be used with discretion around bystanders. They should always be advised of the rationale behind the use of this technique. And never place yourself between a sow and her cubs.
Black bear are generally easy to frighten away.
Such action will usually result in a discouraged bear which moves on. A bear that has become habituated, however, may learn to bluff charge. A bluff charge is a discernable aggressive movement toward humans. This action is intended to move persons from an area, such as a picnic table or campsite where food is present. Once accomplished, the bear enjoys a free meal.