In the course of trading on the Binance spot market, you will accumulate an insignificant quantity of assets that you cannot sell in your balance. Binance refers to these balances as "dust" and allows you to convert them into its own BNB token.
At the top of the Binance home page, hover over the Wallet tab.
Select Fiat and Spot.
On the Wallet overview page, select Fiat and Spot.
If Hide Small Balances is checked, uncheck it
The full list of wallet assets will open. Select Convert small balances to BNB.
Check the boxes for the individual assets you want to convert or check the general box to select all of them.
Select Convert.
Confirm this action.
You wallet is now cleared of any insignificant assets. You can now use the additional BNB token balance to pay for transaction fees.
Holding a BNB token in your Binance wallet is beneficial, because BNB fees are much lower than the ones charged for other assets.