"This map tells the whole story:
http://sierrawild.gov/bears/food-storage-map"

Well, no it doesn't.
It is a 2009 map.
On the Inyo National Forest site the Order for food protection can be found, and after a little hacking, it looks like this



It does not say "Canister", it says "Container", which MAY{?} include an Ursack.

Clarification is needed.

Edit: the Modified Language reference should read "Page 1 of 3, below the Order"

Edited by greg23 on 11/26/2010 21:06:30 MST.

Greg, that forest service order was in effect only until October 31, 2010.

--B.G.--

That is correct - the 2010 hiking season. Not 2009.

A new Order will be issued before May of 2011. I doubt if the language will revert.

Clarification is needed.

Edited by greg23 on 11/26/2010 20:53:20 MST.