How Do I Use a Bear Canister?
All food, trash, toiletries, and other odorous items must be stored inside an Interagency Grizzly Bear Committee (IGBC) approved bear canister. This includes but is not limited to all sealed or packaged food, sunscreen, soap, mosquito repellent, lip balm, deodorant, medications, and feminine products. As a general rule, if you put it in your mouth or on your skin, it should probably be stored in a bear canister.
Denali National Park
Techniques to reduce trash and overall weight on trip:
Pack out what you pack in! Burning trash in the backcountry of GTNP is illegal.
Never approach a bear.
Never feed a bear.
Stay 100 yards (1 football field) from bears at all times.