Firewood from out of state.
There is a very good article in the Denver Post about the Emerald Ash Borer, and other tree killing insects called Urban Forest under Siege. http://www.denverpost.com/opinion/ci_25860363/whats-your-f...
Forum Discussion
When I camped in Arcadia NP last year with the G kids they had signs up about the beetles and what they did was to cut down the infected trees into 20 in logs and created a large pile for campers to take as much as they wanted for free. I thought that someone was thinking and it was a good way to kill the bugs and have a campfire at the same time.
