Executing an airdrop is one of the most effective ways to boost community engagement, but a single technical mistake can cost you thousands of dollars in wasted gas fees or ruined project credibility. Here are the 5 most common pitfalls and how to avoid them.
1. Pasting the Wrong Contract Address During Approval
One of the most frequent errors occurs when a user accidentally pastes the Airdrop Contract's address into the "Token to Airdrop" field. When calling approve() on an airdrop tool that isn't an ERC-20 token itself, MetaMask throws the infamous UNPREDICTABLE_GAS_LIMIT error. Always ensure you paste your target token contract address.
2. Messing Up Decimals Formatting
Not all tokens use 18 decimals! Stablecoins like USDT often use 6 decimals, while many meme coins use 9 or 18. If you set the wrong decimal value during formatting, you could accidentally send $1,000\times$ more or less tokens than intended to your recipients.
3. Forgetting Tax & Reflection Fees
If your token has a built-in transfer tax (e.g., 5% buy/sell/transfer tax), the recipient will receive the amount minus the tax percentage. Make sure your community knows about the tax beforehand, or temporarily lower transfer taxes during the distribution phase.
4. Trying to Send Native BNB Directly
Smart contract multisenders rely on standard ERC-20 transferFrom() functions. Native BNB does not implement the ERC-20 standard interface. If you want to airdrop native BNB, convert it to WBNB (Wrapped BNB) first.
5. Overpaying for Fixed BNB Protocol Fees
Many legacy multisenders charge fixed fees in raw BNB for every transaction batch. Using a native token-driven multisender like Keshtay L.C. ensures you pay a fraction of the cost while driving value back into a utility ecosystem.