Leave no trace
Free camping only stays free while the ground stays good. You're a guest on public land, and the land manager is always deciding — quietly, spot by spot — whether a road stays open or gets a gate. "Leave no trace" is a set of ideas from the Leave No Trace Center for Outdoor Ethics; there are seven of them, written mostly for backpackers on foot. Here's how they land for someone camping out of a rig, in six plain habits. One thing before any of it: these are rules of thumb, and wherever a rule of thumb meets the managing unit's actual rule, the unit's rule wins.
Know the spot before you roll
Half of leaving no trace is homework you do before you leave the pavement. Know the unit's stay limit, whether fires are allowed right now, where you're actually allowed to drive and pull off, any group-size limit, and whether it's a place that wants you to pack your waste out. Turning up unprepared is how people end up improvising in ways that scar a spot — burning trash, digging where they shouldn't, parking on green ground because they never scouted in daylight. Bring what makes you self-contained: trash bags, a real plan for human waste, and enough water. Two of those homework items have their own notes — where you can legally drive and pull off and whether you can have a fire at all.
Camp on ground that already takes a beating
Reuse a spur and a bare pad that's clearly been camped before — don't cut a new one. Park on dirt, gravel, rock, or dry grass, not a green meadow, wet ground, or a streambank. In the desert, watch for the living crust — that dark, crunchy, bumpy skin on the sand (some call it cryptobiotic soil). It's alive, it holds the desert together, and a single tire track through it can take decades to heal, so keep tires and boots on bare dirt and rock. That's the short version; picking the actual patch of ground is its own note.
Everything you brought in leaves with you
Pack out all your trash — and that means the little stuff too: bottle caps, twist ties, food scraps, cigarette butts, orange peels (they don't quietly "compost," they sit there for months). For human waste where there's no toilet, dig a small hole 6 to 8 inches deep, at least 200 feet — call it 70 to 80 steps — from any water, camp, or trail, and cover it back over; pack out your toilet paper, or bury it only where that's allowed. More and more high-use and desert areas now want human waste packed out entirely in a bag, so check the unit — a dug hole isn't legal everywhere. Your rig's grey and black tanks are a different thing entirely: they never go in a hole or on the ground, ever — a real dump station, nowhere else. Wash water counts too: soap, grease, and food bits stay out of any creek or lake, so scrub off to the side and let it soak into the ground, not into the water everyone downstream is drinking. And the same rule the whole site runs on applies to what you scoop from a creek to drink — treat it, always.
Leave what you find, and go easy with fire
Take pictures, not souvenirs. Leave the rocks, the antlers, the wildflowers where they are — and especially anything that looks old or man-made. Arrowheads, cabins, and rock art are protected by federal law, and moving or pocketing them is a crime, not a keepsake. Don't carve or nail trees. And don't build a new rock fire ring. On fire, the honest first answer is often don't: check the unit's current order before you strike a match, because a ring already on the ground is not permission and dispersed fires are the first thing shut off in a dry spell. Where a fire is allowed, use the existing ring, keep it small, and burn only dead-and-down wood you find on the ground — never cut a standing tree, even a dead one, because those are homes for wildlife. Burn it down to ash, then put it dead out, cold to the touch, before you sleep or leave.
Keep wildlife wild
Store your food and trash where animals can't get to it — inside the rig, in a locked box, or however the unit tells you to in bear country (don't invent a rope-and-tree routine where the rules call for a hard-sided box). And never feed anything, on purpose or by leaving a mess behind. Feed them and you teach them to beg, and a begging animal is the one that gets killed later — that's the whole reason "a fed animal is a dead animal" gets said out here. Give wildlife room, keep dogs under control, and when you're parked near the only water for miles, camp back from it so deer, elk, and everything else can still get a drink without you standing in the way.
Leave room for the next person — and leave it cleaner
You're not the only one out here. Keep the noise and the generator down, especially after dark; point your lights down instead of into someone's rig; don't crowd a camp that got there first; and don't block a road, a gate, or a trailhead. Then, when you pull out, do the one thing that matters most on a free-camping site: leave the pad cleaner than you found it. Pick up the trash that isn't even yours. Trashed, rutted, fire-scarred spots are a big part of why "no camping" signs go up and gates get locked — it isn't the only reason a manager closes a road, but it's the one that's on us. Every clean pad you leave is a quiet argument for keeping the gate open.
Here's the honest version: leaving no trace isn't about being perfect or earning a badge. It's leaving so little sign you were there that the next person — and the agency deciding whether this road stays open next year — has no reason to shut it down. The full framework is worth reading straight from the Leave No Trace Center for Outdoor Ethics if you want the whole thing; everything here is a rule of thumb, and the rule where you're actually standing always wins.