Backcountry travelers must have their permits in possession while in the backcountry. Camping in bear country, especially with grizzly bears in the area, require certain precautions. In areas of North America where grizzly bears are common, federal regulations require campers to suspend food from trees or to use bear proof food box's. Hiking and camping restrictions in Yellowstone Park are occasionally in effect as a result of bear activity. Never camp in an area that has obvious evidence of bear activity such as digging, tracks, or scat.
Odors attract bears, so avoid carrying or cooking odorous foods.
All food, garbage, or other odorous items used for preparing or cooking food must be secured from bears. Most backcountry campsites in Yellowstone have food poles from which all food, cooking gear, and scented articles must be suspended when not being used. Treat all odorous products such as soap, deodorant, or other toiletries in the same manner as food. Do not leave packs containing food unattended, even for a few minutes. Allowing a bear to obtain human food even once often results in the bear becoming aggressive about obtaining such food in the future.