New member here. Forgive my rambling observations, guesses and questions:
I’m sitting here next to a Bear Vault 500 rented from REI and it looks to be about the same size as a backpack leaving me wondering if this represents a choice between having food or having a tent/sleeping bag. I’m being a little facetious here, but just a little. It looks as if high density food could be packed efficiently in this thing, and this could feed a family of four for a week.
I am in the Pacific Northwest where traditionally we keep our food in our tents. ;)
I love, and can afford, packaged freeze-dried meals such as Mountain House (Peak Refuel is even better) which is delicious and dense with protein and calories. But the packaging creates a good deal of air space, preventing packing density. Here is an idea on which I would like your comments: What if I emptied those packages into freezer bags. In this way, a week’s worth of dinners would take up perhaps the b0ttom three or four inches of this Bear Vault 500. I could keep and reuse a folded factory package for rehydrating these meals. In fact, I could measure and customize meal sizes this way.
The Bear Vault 450 is considerably smaller and I wonder why it would not be plenty large, as long as I 0nly use the Vault for stinky stuff. Nuts, hard salami, etc. I suppose a bear can smell through the factory Mountain House and Peak Refuel packages but they are probably not very odorous and could just be kept in my tent. I placed one on the floor of my dining room and my dog totally ignored it. Chicken Alfredo Pasta. She LOVES chicken.
Another question: Is your bear can always located where you left it the night before? Couldn’t a bear move it? When you retrieve your bear can, has it often been disturbed in the night?
Anecdotally, we almost never hear of unfortunate encounters with bears. Statistically, there have been few in Washington State. Nearly all of them involved a domestic dog. There has never been a bear mauling at Rainier National Park. A park ranger told me he was running a trail at dusk and suddenly came face-to-face with a bear. The bear ignored him. I think two-legged creatures and rodents are a greater danger to my backpacking experiences.
I have never actually seen a cougar in the wild, though most of you have more backpacking experience than I. They have surely seen me. :)

