Cleaning Cards Reduce Fees From Erroneous Transactions

Cleaning cards reduce fees from erroneous transactions:
Credit card fees are impacted by whether the transaction is processed by being swiped or keyed in. Credit card companies explain that the variety of rates is due to the numerous levels of risk associated with transactions, such as having a greater risk when the physical card is not swiped. The increase in the fee can be as high as an additional 3%. For every $100.00 of manual entry you could be giving away $3.00. Why not just clean the reader and keep your $3.00.