When i was on Holiday in canada I saw a sign that said this
We advise that you wear noisy little bells on your clothing so as not to startle bears. We also advise you to carry pepper spray in case of an encounter with a bear. It is also a good idea to watch out for fresh signs of bear activity.
You should recognize the difference between Black Bear and Grizzly Bear droppings. Black bear droppings are smaller and contain lots of berries and squirrel fur. Grizzly bear droppings have little bells in it and smell like pepper.