Bear kegs are great...but I did read somewhere that somewhere in the US a bear has mastered opening the keg...

There is a bear in the Marcy Dam area of the Adirondacks in upstate New York that has learned to open BearVault food containers. BearVaults are approved for use everywhere except the area encompassing the Lake Colden/Marcy Dam corridor and the Johns Brook valley in the Adirondacks.