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Bears and food storage

Bear-resistant

Also called bear-proof

What does bear-resistant mean?

Bear-resistant is the accurate term for certified food storage: the container holds up against a determined bear for a defined test period. Bear-proof is marketing. Given enough time and motivation, a bear can defeat almost anything.

Bear-resistant at a glance

Certifies
Resistance for a test period
Does not certify
Permanence
Common test
60 minutes of live bear contact

What the standard actually certifies

Certification standards test for resistance over a period, not for permanence. A container passes by surviving a defined encounter with a real bear without being opened. That's a meaningful bar and it's not the same as being impossible to defeat, which is why the agencies and the manufacturers both say resistant.

Why the wording changes your behavior

The distinction changes how you should behave. If you believe your canister is bear-proof, leaving it next to the tent seems fine. If you understand it's resistant, you place it well away from where you sleep, because the point is that a bear investigating it does so somewhere other than your campsite, gets bored, and leaves. Roughly 100 feet from camp on flat ground is the standard guidance in most places.

Why food-conditioned bears matter

It also explains why food-conditioned bears are treated as a serious management problem rather than an inconvenience. A bear that has once succeeded in getting human food will work much harder and much longer at the next container it finds, which is what shifts the odds. That's the reasoning behind the pack-it-out rules on scented trash, and behind why a single careless camper affects everyone who follows.

What this means when you're choosing

  • The word resistant rather than proof, which is a tell about the seller
  • The certifying body, since resistant on its own means nothing
  • Whether the closure needs a tool you might lose

The common mistake

Treating a certified container as a safe

It buys time against a determined animal, not immunity. Store it away from your tent, out of sight, and do not treat it as a reason to camp with food beside you. A bear that gets into anything, once, becomes a management problem and often a dead bear.

Common questions

Is anything actually bear-proof?

Not in the sense the word implies. Certification tests resistance over a defined period against a determined bear, which is why the agencies and manufacturers say bear-resistant.

How far from camp should I put my canister?

About 100 feet is the common guidance, on flat ground, away from water and cliffs, and not tied to anything. Check the specific rules for the area you're in, since some units are more prescriptive.

Where this is defined

Where this comes up

Guides on Tom's Hiking where bear-resistant changes which product is right for you.

Going deeper

More in bears and food storage

Bear canister

A bear canister is a rigid container with a lid a bear can't open, used to store food and scented items overnight. Many parks and wilderness areas require an approved model, and where they do it's a regulation rather than a recommendation.

IGBC certification

IGBC certification is the Interagency Grizzly Bear Committee's testing programme for bear-resistant products. Containers are tested against live captive grizzlies and by mechanical means, and passing earns a certification number many land managers reference.

SIBBG

SIBBG is the Sierra Interagency Black Bear Group, which coordinates black bear management across Yosemite, Sequoia and Kings Canyon, Inyo National Forest and neighbouring lands. It maintains the allowed food-storage container list used across much of the Sierra Nevada.

Ursack

An Ursack is a soft, flexible bear bag made from cut-resistant fabric that ties to a tree instead of being a rigid container. It's much lighter and more packable than a canister, and it isn't accepted everywhere canisters are required.

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