Published May 2, 2026 05:30AM<\/p>\n<\/div>\n
Packing for a national park trip usually follows a predictable checklist: hiking boots, water bottle, snacks, maybe a board game for you and your buddies to argue about around the campfire. But depending on which park boundary you cross, some pieces of backcountry gear can become federal contraband.<\/p>\n
The National Park Service (NPS) maintains a large, nuanced, and sometimes heavily debated list of prohibited items\u00a0that\u00a0can vary from park to park. Because national parks are federal land, violating these regulations is usually classified as a misdemeanor. Most minor infractions end with a citation and a fine of a couple of hundred dollars, but violators could face up to $5,000 in fines, six months in prison, or both.<\/p>\n
From essential safety gear to seemingly harmless campsite luxuries, here are ten common items that could earn you either a hefty fine or a swift escort out of the park.<\/p>\n
A quick disclaimer: Not every one of these items is banned from all parks<\/a>. Each national park site is different. Before you visit, check out the respective site\u2019s \u201cPlan Your Visit\u201d webpage for more information.<\/p>\n Depending on which national park you\u2019re standing in, a can of bear spray could be either an essential piece of safety equipment or illegal contraband. If you\u2019re visiting a national park in grizzly country, like Yellowstone, Glacier, or Grand Teton, rangers ask that you carry bear spray in the backcountry. But in other national parks, like Yosemite, Sequoia, and Kings Canyon, that same canister of bear spray is an illegal weapon.<\/p>\n The logic behind this rule comes down to differences among bear species. California\u2019s Sierra Nevada mountains are home exclusively to black bears, which are more pest than predator. They\u2019re generally skittish and easily deterred by yelling, waving your arms, or clapping. (Japanese black bears, on the other hand, are an entirely different story.) The grizzly bears encountered in Wyoming and Montana are much more aggressive and often require the heavy-duty chemical deterrence of pepper spray.<\/p>\n Carrying a firearm inside a national park site is generally legal, as long as the gun owner complies with federal, state, and local laws. You just can\u2019t carry firearms into federal facilities, such as gift shops or visitor centers.<\/p>\n Firearm possession in national parks is protected by a 2010 federal law<\/a>. However, that legislation did not extend to other types of weaponry. So, ninja stars, swords, crossbows, and nunchucks must all be left behind.<\/p>\n Firewood itself isn\u2019t banned from national parks, but any wood from outside of park boundaries is usually banned. Most parks have a strict \u201cbuy it where you burn it\u201d policy, prohibiting the use of wood brought from more than ten to 50 miles away.<\/p>\n Invasive insects, such as the emerald ash borer and the Asian longhorned beetle, can hitchhike on transported firewood and decimate forest ecosystems that lack natural defenses against them.<\/p>\n The NPS issued a system-wide blanket ban on unmanned aircraft<\/a> in 2014, and it remains in place today. While some parks allow visitors to fly drones in highly specific scenarios, you must apply for a special use permit beforehand.<\/p>\n The ban was enacted following a string of high-profile incidents, including one drone crashing into a Yellowstone hot spring and another harassing bighorn sheep in Zion. The NPS listed several critical reasons for the restriction, including noise pollution, visitor safety, severe stress to wildlife, and the potential for civilian drones to interfere with aerial emergency operations.<\/p>\n Stringing up a hammock between two trees might seem like a low-impact way to relax in the woods, but many national parks have implemented strict rules on where and how you can hang hammocks. Other parks, like Zion and Bryce Canyon, have banned hammocks from the backcountry entirely.<\/p>\n If hung improperly, hammock straps and ropes can strip bark from trees and other vegetation, cutting off their water and nutrient supply and leaving them vulnerable to pests, fungi, and bacterial infections. If hung from trees that are too small, hammocks can also bend or snap a tree entirely.<\/p>\n People can legally purchase and consume marijuana in states like California, Colorado, and Washington. However, the substance is illegal on federally managed land, including national parks found in those respective states, such as Yosemite, the Rocky Mountains, and Mount Rainier.<\/p>\n Because marijuana remains classified as a drug under federal law, possessing it inside a national park is a federal misdemeanor. Park rangers aren\u2019t required to acknowledge a state-issued medical card or that the marijuana was bought legally at a nearby dispensary. If they find it, visitors may be subject to citations, confiscation, and a mandatory court appearance.<\/p>\n The NPS recently relaxed its policies to allow e-bikes on paved and dirt roads, but the types of e-bikes allowed and where they can be ridden vary widely from park to park. Also, even in parks where e-bikes are allowed, all e-bikes, even gravel or mountain-bike-style models, are banned on singletrack trails and off-road.<\/p>\n The rules surrounding e-bikes have led to massive confusion and heated debate. Some argue that the heavy frames and motorized torque of an e-bike can accelerate trail erosion, and the extra speed they allow can lead to accidents on tight, multi-use trails.<\/p>\n While pets are welcome in developed national park areas, like paved scenic overlooks, campgrounds, and parking lots, they\u2019re almost universally banned from hiking trails, beaches, and the backcountry. There are exceptions, like Acadia National Park<\/a>, which allows dogs on most trails.<\/p>\n The NPS enforces this rule to protect both the local wildlife and your pet. Even the best-behaved dog leaves behind predator scent markers that can disrupt local wildlife behavior, and a dog can also trigger aggressive, defensive responses from large animals like moose, bears, or mountain lions, putting both the owner and the dog in danger.<\/p>\n Geocaching, a global outdoor treasure hunt in which participants use GPS coordinates to hide and find small containers, is a popular hobby, but the NPS has a strict \u201cno physical caches\u201d policy. Visitors can still geocache inside a national park, but only by EarthCaching<\/a>. In this virtual version of the game, the cache is a unique natural feature, such as a rock arch or hoodoo, that the hunter simply observes without leaving anything behind.<\/p>\n1. Bear Spray<\/h2>\n
Why the Ban<\/strong><\/h3>\n
2. Weapons<\/h2>\n
Why the Ban<\/strong><\/h3>\n
Other Surprising Items Banned from Some National Sites<\/strong><\/h4>\n
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3. Outside Firewood<\/h2>\n
Why the Ban<\/strong><\/h3>\n
4. Drones<\/h2>\n
Why the Ban<\/strong><\/h3>\n
5. Hammocks<\/h2>\n
Why the Ban<\/strong><\/h3>\n
![\"Slinging](\"https:\/\/cdn.outsideonline.com\/wp-content\/uploads\/2026\/04\/GettyImages-1429685601.jpg?width=3840&auto=webp&quality=75&fit=cover\"\/)
6. Marijuana<\/h2>\n
Why the Ban<\/strong><\/h3>\n
Other Items Banned from Some National Sites<\/strong><\/h4>\n
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7. E-Bikes on Singletrack<\/h2>\n
Why the Ban<\/strong><\/h3>\n
8. Dogs in the Backcountry<\/h2>\n
Why the Ban<\/strong><\/h3>\n
![\"\"](\"https:\/\/cdn.outsideonline.com\/wp-content\/uploads\/2026\/04\/GettyImages-1754372204.jpg?width=3840&auto=webp&quality=75&fit=cover\"\/)
9. Geocaches<\/h2>\n
Why the Ban<\/strong><\/h3>\n