They leave behind tons of trash and I bet just as much poop and pee.
It's a bet you'd win. It's only a matter of time before we start seeing diseases related to raw sewage showing up in our border hospitals.
There are areas here in the Coronado National Forest and the Huachuca Mountains where you can no longer go hiking for the trash and human waste littering the floor of the forest. And with less than 13 inches of rainfall annually, it isn't going to wash away any time soon.