If you claim airdrops or farm new protocols, your main wallet should never be the wallet that touches them. A burner wallet is a separate, low-value wallet used only for risky interactions: new claims, testnet-style launches, and unfamiliar decentralized apps. If something goes wrong, the damage is limited to what was in that wallet. This guide explains a safe setup that keeps the habit practical without turning every claim into a chore.

A burner wallet is a normal wallet with a different job. It holds only a small amount of gas money and whatever tokens you claim through it, and it is never used to store long-term holdings. It is not anonymous by itself, and it does not make a scam safe. Its value is containment. If you sign a bad approval, the attacker can only reach what is inside that wallet, not your savings, your main trading funds, or your NFTs held elsewhere.

Create the burner wallet as a fresh wallet in your wallet app, or in a separate browser profile if you prefer a clean separation. Write down its recovery phrase on paper and store it safely, just as you would for any wallet. Do not reuse a recovery phrase from your main wallet, and do not store the phrase in screenshots, cloud notes, or chat messages. A burner wallet still needs basic security, because its claim history and small balances can grow over time if you forget to move tokens out.

Fund the burner wallet with only enough gas for the claims you plan to make, plus a small buffer. Do not send a large amount just in case, and do not leave valuable claimed tokens sitting in it for weeks. Think of it like cash in a pocket: enough for the errand, not your whole bank balance. If a claim requires an unusually large gas fee or asks you to hold a large amount of another token first, pause and research the project before proceeding.

Never send your main holdings through the burner wallet, and never connect your main wallet to a site you first reached through the burner wallet without verifying it independently. It is also good practice not to link the two wallets publicly, for example by using the burner address as your profile address on a project tied to your main identity. Separation works best when it is consistent, not just something you do when you remember.

The burner wallet protects you, but it does not replace reading approvals. Before you sign, check what token the approval covers, whether the amount is limited or unlimited, and whether the request matches what the site claims to do. A token claim should not need unlimited approval for an unrelated token. When possible, set a limited approval amount instead of unlimited, and revoke approvals after you finish with a site you do not plan to revisit.

After a successful claim, decide quickly what to do with the tokens. If you plan to hold them, move them to your main wallet or a storage wallet through a normal transfer, after checking that the token is the genuine one and not a lookalike. If you plan to sell them, do so from the burner wallet or after moving them, depending on your own risk tolerance, but do not leave them sitting in the burner wallet indefinitely. Regular clean-outs keep the wallet's exposure low and make it easier to notice unexpected activity.

Review the burner wallet periodically. Check its connected sites in your wallet settings, revoke approvals you no longer need, and look for transactions you do not recognise. If a burner wallet has touched many unknown sites, or if you ever signed something you did not understand, retire it: move any remaining value out, disconnect all sites, and start a fresh burner wallet. Retiring a wallet costs nothing but a few minutes, and it is far cheaper than discovering a stale approval months later.

A burner wallet is a simple habit, not a guarantee of safety. It works best alongside the basics: verify projects through official channels, be wary of urgency and pay-to-claim offers, and never sign an approval you cannot explain. Used that way, it turns airdrop farming from a risk to your whole portfolio into a contained experiment with clear limits.