May be something related to child resistant packaging. From the CPSC FAQ on the Poison Prevention Packaging ACT "For a package to be child-resistant, at least 85% of tested children must not be able to open the package during the first 5 minutes of the test".https://www.cpsc.gov/FAQ/PPPA
There is considerable overlap between the intelligence of the smartest bears and the dumbest tourists (in reference to why the Yosemite garbage cans are difficult to use)
Design a camp ground so that people who don't read the rules naturally fall in a pit that the rules warned about. Clear out the pit about sunset, and bus the pit folk to a motel.
Is that pit lined with mattresses so that those peeps will just isolate themselves for a day? I read the first sentence and nodded in approval: let the natural selection take the wheel but the second sentence made it much more humane.