Mt Whitney Zone Forums General Discussion Ursack failure near Mammoth Lakes

Here are some field reports on the Ursack:

http://www.ursack.com/ursack-fieldtests.htm

I've used one in the Inyo Forest for three years. Never had a problem with it. The Ursack White model. But I'd use a hard sided container in SEKI or Yosemite to protect me against being cited by a ranger...