Other organic waste. As a general rule, all garbage should be carried out, even left over food. That's a particularly important rule if you are camping in a heavily used area. In infrequently used areas, however, the rule can be applied less rigidly. Before leaving a campsite, get in the habit of doing one last look for litter including micro litter.
Micro litter consists of pieces of candy wrappers, bits of aluminum foil, cigarette butts, etc.
Trails and Cross-country Travel Switchbacks. When going down switch backing trails, stay on the trail and resist the temptation to cut the switchback. Cutting switchbacks creates small pathways which divert rain and melting snow and eventually lead to erosion. Bikes and ATV's should always stay on trails. To avoid creating a trail, don't hike one behind the other, i.e. don't follow each other's foot steps.