By Dana Okoro, Editorial Reviewer · Published September 14, 2026, 6:03 PM ET · Updated September 29, 2026, 6:16 PM ET
Direct Answer
A bear canister isn't hung. Its rigid, smooth shape resists a bear rolling, biting, or clawing it open when left directly on the ground, away from camp — unlike a bear bag, which does get hung from a tree. Inside your pack, carry a canister in the core zone, close to your back, like any other heavy item.
In plain English
There are two main ways to keep food away from bears when you camp. One is a soft bag that you hang high in a tree with a rope. The other is a bear canister, a hard, smooth container with a lid a bear can't open. People sometimes mix them up and think the canister goes in a tree too. It doesn't.
A canister works like a safe sitting on the floor. A bear can sniff it, paw it and even push it around, but it can't get inside. So you leave it on flat ground a good distance from your tent, where a bear can't roll it off a cliff or into a stream.
During the day, the canister simply rides inside your backpack, close to your back, like any heavy item. At camp you take it out, lock it, and set it on the ground away from where you sleep.
The idea of hanging a bear canister is a common mix-up with the older bear-bag hanging method, and it's worth clearing up because the two food-storage systems work in opposite ways.
Why don't bear canisters get hung from a tree?
A bear canister's entire design relies on being left on the ground, not suspended. Its hard-sided, rounded shell has no branches, edges, or seams a bear can easily grip, bite into, or roll onto something to crack open, which is precisely what makes it effective without needing a tree or cord. Bear bags and food sacks, which are soft-sided and easily torn or chewed, rely on being hung out of reach instead, since they have no structural resistance of their own.
Placing a bear canister on flat ground at least 100 feet from camp, away from cliffs and water where a bear might knock or roll it out of reach, is the standard method regardless of terrain or tree availability (some parks require more; Rocky Mountain National Park requires 200 feet from the campsite) — one reason canisters are required in many backcountry areas that lack suitable hanging trees.
How do you carry a bear canister while hiking, if not hanging it?
While hiking, a bear canister rides inside the pack rather than hanging from it. It fits into the core zone near the back panel, either lying horizontally near the bottom of the main compartment or standing vertically alongside the spine, following the same placement logic as any other heavy, dense item in the pack.
Once you reach camp, the canister comes back out and goes straight onto the ground at a safe distance, rather than staying strapped to the pack overnight or being lifted into a tree. That ground placement, not hanging, is what the whole system is built around.
Why a canister stays on the ground
The National Park Service says bear-resistant containers only work when closed and locked, should be placed on flat ground at least 100 feet from camp, and should not be put near cliffs or water, where a bear could roll or knock them away.1 That last point explains the design: a bear may bat a canister around trying to open it, so the risk isn't the bear getting in but the canister ending up somewhere you can't retrieve it.
The canister's protection has limits. The Interagency Grizzly Bear Committee says its certification means a product met minimum standards for the effort grizzly bears must spend to get at the contents, and that approval does not mean a container is bear-proof or can never be breached.2 Closing the lid properly every time matters more than where you put it.
Distance rules vary. Some guides say roughly 100 feet from your tent, which matches general NPS guidance, but Rocky Mountain National Park requires the canister to be kept 200 feet from the campsite at all times.3 The NPS guidance says to keep canisters away from water but doesn't set a separate distance for it, so follow the park's own rule where one exists.
Where hanging still applies, and where it's banned
Hanging is a real method for soft food bags, but it has its own rules. Idaho Panhandle National Forests say to hang food at least 10 feet up and 4 feet from the trunk.4 Inyo National Forest allows a counterbalance hang at least 15 feet up and 10 feet from the trunk only where canisters aren't mandatory; elsewhere a container is required.5 In Yosemite, hanging food is illegal everywhere.6
Food storage rules vary by park, so check before you go.7
What goes in overnight, and where you sleep
The NPS notes that bears treat any scented item, including toiletries, sunscreen, trash and fuel, as food.7 Yosemite's definition of food that must be stored covers all food and drinks, trash, toiletries and other scented items.6 Leave space in the canister for these.
Camp layout matters too. Idaho Panhandle National Forests suggest pitching tents 100 yards uphill from cooking and food storage where possible.4 Cook, eat and store the canister in one area, and sleep in another.
