On LeoDex, the harvesting of USDC for LEO stakers (sLEO) is automatic. According to the official documentation, 100% of LeoDex Affiliate Fees are paid to the sLEO contract on Arbitrum, and the contract distributes USDC harvests to LEO stakers daily on a stake-weighted basis. There is no manual action required to claim or harvest these rewards; they are automatically credited to stakers. For more details, you can refer to the documentation at Leo Staking .