Bears are smart, and given enough time they will learn to get into almost any "bear-proof" container. Over time, what is approved will also change, as well the unique requirements of each jurisdiction at any point in time. So, unless you regularly use a bear can, I think it is better to rent than buy. I use a bear can so much and go out so much that the weight savings of the Bearikade is worth it, even if not approved by IGBC. Here in the Sierra, the Ursack has had a history of being approved at times, and not approved at others.

The latest method that bears now use, is to roll the can over a cliff to break it. The idea of a bear can is that the bear cannot pick it up, only can roll it around, so will get bored and leave it alone. You set it on the open ground. If you lock the bear can against rocks or tree trunks, it allows the bear to exert more force to break the can. Be careful to place your bear can where it cannot be rolled into a river or off a cliff! By the way, the regulators could care less if your food goes missing- they only are concerned that the bear cannot get into it and become habituated to people food.

For larger groups you can use electric nets. They weigh about 5 pounds so not efficient for the single backpacker. NOLS uses these for their courses. A solar battery provides the power.