The use of a Garcia is "Highly Recommended". There is no regulation or law requiring the use of any one manufacturor's item.
Again, the Eastern High Peaks Area is the only known bear that can regularly open a Bear Vault.
From Bear Vault's web site:
In 2007 one or more bears at Marcy Dam in the Adirondacks learned how to open BearVault models. The bear(s) opened the lids by pressing in the snap on the lid with its canine tooth, unscrewing the lid past the housing lock and then opening the unit. There were no problems with BearVaults outside of this area.
In response to this a new lid was developed for 2008 which had two snaps on the lid which both required being pressed in sequentially- this is the model BV450/500. Testing was conducted during June and July 2008 at Marcy Dam and Lake Colden. We now have the test results. Surprisingly, the bear(s) pressed in the first snap with its incisor, rotated the lid and then pressed in the 2nd snap with its incisor and opened the lid.
The DEC believes that this behavior is unique to this bear(s) as they have not had any incidents of this type of failure of BV350 and higher models outside of this area. They also are doubtful that this behavior will migrate to other bears and BearVault has seen no evidence of this happening. There have also been no problems whatsoever with BV350 and higher models anywhere else in North America.
Accordingly, BearVault recommends against using BearVault canisters in the Lake Colden/Marcy Dam corridor and the Johns Brook valley as these are within the bears' territory. You can freely use BearVaults elsewhere.
The double catch lid did not work because of the same technique needed to open it. A screw hot melted, or drilled & tapped into the lid and body works to prevent the twisting/rotation of the lid.
I go up there between 1 and 3 times per year and have been for the past 20+ years. We went from no canisters and LOTS of bears, to sloppy campers with canisters, to (mostly) good campers with good habits. A lot of the "rookies" don't know what to do, even if they have a canister. Fortunatly, the bear population is MUCH reduced these days...because of the canister rule. Some of the trails are scrubbed in. That is, along clifs, in heavily forested areas, over and around large boulders. Be prepared to meet wild life on the trails, they use them too.
1) Do not spill foods, flavoured drinks near designated camps.
2) Do not leave foods in your pack or in camp with you.
3) Do not store containers within 100' of camp.
4) Do not store containers near a cliff, water supply, or on a hill. Choose a flat or dished in area.
5) Paint the lid bright BLUE. It shows up the best. In fall, dropping leaves can cover the canister, MARK it's location in your mind.