deflave,
OC spray does not work on approximately 10% of people. It also has little effect on those under the influence of PCP. Otherwise it will work. It worked on me, and it worked on the only combative suspect whom I squirted.
I am skeptical of its purported efficacy on bears. While it might have dissuaded some bears, I would like to know precisely what dissuaded them. And I do know the effect it has on me, which is why I would be reluctant to use it except under ideal conditions; e.g., wind at my back. If I were to remotely think I could become incapacitated by it, I'd use a gun.
Stay safe,
R
