Bear Canisters have proved to be very successful in reducing the number of bear incidents, which is why they are mandatory for backpackers in most national parks and many wilderness areas and national forests in California. However, only canisters on the National Parks' list of approved canisters qualify.
While the Garcia and the Bear Vault are by far the most popular, other approved canisters are available and are shown on our comparison chart below. In choosing a canister, consider the size that best meets your needs.
The types of food you bring and how you pack them can make a difference in choosing the canister size. Remember that at night you will need to store all scented items (toothpaste, sun screen, etc.) in the canister along with your food.
Canisters can quickly fill up the interior of a pack. Many manufacturers sell sacks for the canisters so that they can be strapped to the outside of a pack.
Canister Sizes
Small Canisters (275 - 300 cubic inches) - adequate for weekend trip for 2 people, but will be too small for longer trips
Medium Canisters (440 - 650 cubic inches) - the most popular size because for only slightly more weight they are large enough for trips for 1 person up to 5 days, or even longer.
Large Canisters (700 - 900 cubic inches) - great for extended trips with only a small increase in weight.