Stephen Herrero’s book says sometimes the bear will return after being sprayed. So, the same bear can come back if it has not felt the full wrath of the bear spray. If you managed to scare the bear away, best to move camp immediately. I guess bear spray is a deterrent to spook the bear and hope it doesn’t come back. Of course once you exhaust the spray – you got to get another one quickly…..maybe you are so spooked that you will end your trip soon. But, yeah, if you are 5 days or so from resupply point and your spray is empty – it is not a good situation in grizzly area. But, most of the time, you don’t use the spray as encounters are so rare. If there are two of you, then you would have two sprays – so some extra insurance.
I wonder if the dog had anything to do with aggravating the encounter in this instance. I mean my beagle would have gone nuts with a bear nearby which would have made the bear go nuts.
Stephen Herrero also says that using one of those air horns are also pretty effective. He talks about grad students working in grizzly area kept using the horns randomly every few minutes and they never saw any bears and once they stopped using the horns, they started seeing bears. Don’t know if the air horn would have kept the bear away..