"It's like if you can't find the perpetrator in school, so everybody is held back for detention," explained Port Stephens council facilities manager Mike Trigar.
But local residents are outraged, and call the containers "a monument to stupidity."
"They've spent over $10,000 on this, when they could have just replanted the trees for a few hundred dollars," complained homeowner Carol Kearins.
Besides, Kearins says, "They have no proof that a resident cut those trees. It could have been drunken idiots from somewhere else."