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Dust and spam tokens: burn, sell or keep?

Tiny balances and airdropped spam lock up SOL in their token accounts. When burning is the better deal, and what you should never burn.

Updated

Most wallets collect clutter: a few cents of a token left over after a swap, a memecoin that went to zero, and tokens nobody asked for that arrived in an airdrop. Each of them sits in its own token account, and each account holds a rent deposit, 0.00203928 SOL if it was opened at the original price. As long as a balance is left, the account cannot be closed.

What counts as dust

A balance is dust when it is worth less than it costs to get rid of it any other way. Selling a token means a swap: a network fee, usually a priority fee, sometimes an app fee, plus price impact on thin markets. If all of that is more than the tokens would fetch, selling loses money. Burning them costs only a fraction of a cent in network fees, and closing the emptied account returns the deposit, which is often worth more than the tokens were.

Spam tokens

Spam tokens are sent to thousands of wallets at once, often with a name that looks like a link or a claim: “Visit … to claim rewards”. The token itself is harmless while it sits there. The danger is what it tries to make you do:

  • Do not visit sites named in a token’s name or metadata. They are a common route to wallet drainers.
  • Do not try to sell spam on unknown sites. A “sell” page you were led to can ask you to sign something else entirely.
  • Hiding is not cleaning. Hiding a token in your wallet’s interface removes it from view, not from the chain. The account and its deposit stay.

Burning a spam token with your own wallet, or a tool you trust, is safe: the burn only needs your signature over your own token account, and nothing about it involves the spammer’s site.

Burn and close

Two instructions, usually in the same transaction: BurnChecked (instruction 15) destroys the exact balance and reduces the token’s supply, then CloseAccount (instruction 9) closes the now-empty account and sends its full deposit to your wallet. The burn names the amount and the token’s decimals, so a wallet preview can show exactly what disappears.

Burning is irreversible. The tokens are gone, for you and for everyone.

What not to burn

Tokens without a market price
No price is not the same as no value. LP shares, vault receipts and deposits often have no market but stand for real money.
NFTs and editions
Tokens with 0 decimals are usually collectibles, tickets or game items. One unit can be worth more than the whole wallet.
Tokens a program controls
If the mint authority is a program, the token is likely a position or receipt that something else redeems.
Anything you do not recognise but might need
Burning is final. When in doubt, leave it, or hide it in your wallet.

Some accounts cannot be burned and closed even if you want to: frozen accounts, wrapped SOL (it is unwrapped instead, see wrapped SOL) and Token-2022 accounts whose extensions block closing.

Sell, burn or keep

  • Worth more than a swap costs: sell it, then close the empty account.
  • Worth less than a swap costs: burn and close. You lose nothing compared with selling.
  • No price, or you are unsure what it is: keep it. You can still withdraw the account’s excess rent with WithdrawExcessLamports without touching the tokens.

The UNRENT scanner prices every token a wallet holds and marks dust, but selects nothing on its own. You tick what to burn, it rechecks prices when building the transaction, and it never offers NFTs, tokens without a price in bulk, or tokens a program controls. How it works lists everything it skips.

Sources

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