Bears learn very quickly.
Bears which associate food with poeple may become aggressive and dangerous - this may lead to personal injury, property damage and dead bears. Don't be the one responsible for the death of a bear because YOU did not store your food properly. Use bear-proof food storage boxes whenever possible. They are available in campgrounds, trailheads, and some backcountry sites and are shared with all travelers. Store soap, sunscreen, deodorant, toothpaste and garbage in the same way as food.