Why not give people a choice...

...as opposed to telling them they just have to use one method of bear repellent? That bear spray might have worked 12 out of 14 times, but as for me I honestly wouldn't want to bet my life on just getting scratched that 13th or 14th time. If the park rangers are so concerned about bears getting killed unnecessarily, why don't they just keep the people out of the parks and be done with it? And people "not being able to read these animals" goes both ways...