Metal Detecting Code of Ethics: Fill Your Holes and Other Rules

The metal detecting code of ethics is a set of widely shared rules that keep sites open: get permission, follow the law, fill every hole, pack out your trash, leave gates and property as you found them, report historic finds, and treat landowners, the public and the land with respect. Clubs across the country publish their own versions, but they all come back to those basics.

This is general information, not legal advice. Rules change and closures are often local, so confirm with the managing agency before you go.

No law requires you to sign a code of ethics. Many of its points, however, mirror real legal obligations, and the rest reflect hard experience: parks, beaches and farms tend to close after one careless detectorist leaves a field full of open holes. The code below combines the common points found in club codes with the rules land managers actually enforce.

The metal detecting code of ethics: 12 core rules

1. Get permission before you detect on private land, preferably in writing.
2. Know and follow the law for the land you are on: federal, state and local rules, permits and closures.
3. Fill every hole, including in sand, and restore turf so it is invisible afterward.
4. Pack out all trash you dig up: pull tabs, foil, nails, wire and bottle caps.
5. Leave gates, fences, crops and livestock as you found them.
6. Stay away from archaeological and historic sites on public land, and do not disturb anything that may be a cultural resource.
7. Report significant historic finds to the landowner or land manager.
8. Never detect on someone else's mining claim without the claimant's permission.
9. Do not damage property: no digging near trees, in landscaped beds, on ball fields or around monuments.
10. Return lost items with identifying marks whenever you reasonably can.
11. Be courteous to landowners, park staff, the public and other detectorists.
12. Be an ambassador for the hobby: explain what you are doing when asked and show how neatly you recover targets.

Why "fill your holes" is rule number one

Unfilled holes are the most visible sign of careless detecting. They damage lawns, trip people and animals, kill turf, and on beaches can trap wildlife. They are also often a legal issue. On BLM land, agency guidance tells collectors to reclaim any disturbance they create, such as backfilling holes. New York City's metal detecting permit requires disturbed ground to be restored. Forest Service guidance describes recreational detecting in terms of small holes.

How to leave no trace

• Pinpoint before you dig, so the hole is no larger than it needs to be. Our guide to pinpointing targets fast explains the technique.
• Cut a three-sided plug in turf and fold it back, or use a probe-and-pop method where tools are restricted. See how to dig a clean plug.
• Lay loose soil on a drop cloth or towel so none is lost in the grass.
• Check the hole with your pinpointer before refilling, so you do not leave a second target behind.
• Replace the plug, press it down with your foot and brush the grass upright.
• In dry weather, a little water from your bottle helps turf recover.

Know the law before you go

An ethical detectorist checks the rules first. In national parks, detectors are prohibited. On BLM land and in many national forests, recreational detecting and prospecting are generally allowed with limits. State and city rules vary widely. Our plain-English guide, Is metal detecting legal?, summarizes the main land types, and our ARPA guide explains the federal law protecting archaeological resources.

Respecting history and archaeology

Federal regulations in national forests prohibit digging in, disturbing or removing any prehistoric, historic or archaeological resource, and the Archaeological Resources Protection Act carries penalties for excavating or removing archaeological resources on federal land without a permit. The BLM tells visitors who encounter a cultural artifact to leave it in place.

Beyond the legal minimum, context is what gives an artifact historical value. A button in a museum drawer tells us little if no one knows where it came from. Ethical detectorists record locations, share notable finds with archaeologists or historical societies, and stay away from sites where digging would destroy information. Programs like the Forest Service's Passport in Time let volunteers, including metal detecting clubs, work with archaeologists on legitimate projects.

Ethics on private land

Permission is a privilege, and how you use it decides whether the next detectorist gets a yes. Stick to the areas the owner agreed to, keep to the agreed days, and never bring friends unless the owner said you could. Show the owner what you find, including the junk, so they see the property being cleaned up. If something valuable turns up, follow your written agreement to the letter, and if you did not make one, talk to the owner before you take it home. Anything that looks like a family heirloom, such as an engraved ring or a medal, should go back to the family. Our guide to getting permission on private land includes a letter template that covers finds.

Buying, selling and sharing finds

Selling finds is legal in many situations, but ethics and law overlap here too. Do not sell anything you may not own, such as items found on land where the owner or the state has a claim. Never buy or sell artifacts that may have been removed from public land, Indian land or protected sites; federal law prohibits trafficking in archaeological resources taken in violation of the law. When you post finds online, avoid revealing exact locations of sensitive sites, which can attract looters. Sharing photos and context with local historical societies is a positive way to contribute to the record.

Courtesy in shared spaces

Ethics and equipment

The right gear makes good habits easier. A pinpointer reduces hole size and digging time; the UIG Pointer is one option. A sturdy digging tool sized for your local rules, a finds pouch, a separate trash pouch and a small towel or drop cloth complete a responsible recovery kit. If you are choosing a detector, think about where you will legally hunt before you buy.

Frequently asked questions

What is the metal detecting code of ethics?

It is a set of commonly shared rules: get permission, follow the law, fill holes, pack out trash, leave property as you found it, respect historic sites and be courteous. Clubs publish their own versions with similar content.

Is the code of ethics legally binding?

Not by itself, but many of its points reflect real legal requirements, such as trespass laws, agency rules on ground disturbance and laws protecting archaeological resources. Club codes can also be conditions of membership.

Why should I pick up trash I find?

Removing junk metal improves the site for everyone, removes hazards like nails and hooks, and shows landowners and park staff that detecting benefits the land.

What should I do if I see someone detecting irresponsibly?

If it is safe, a friendly word about filling holes often helps. For clear violations on public land, such as digging at a protected site, report it to the land manager rather than confronting the person.

Should I report historic finds?

Yes, to the landowner or land manager. On public land, leaving historic artifacts in place and reporting them is often required.

Sources

• >Bureau of Land Management: Can I Keep This?
• >USDA Forest Service: Metal detecting, prospecting and treasure trove guidance
• >36 CFR 261.9, Property (eCFR)
• >NYC Parks: Metal Detector Permits