Our magnetically encoded Bill Validator Cleaning Cards work in all bill validators and currency readers regardless of manufacturer or model. These cards provide a one-step, on-the-spot solution to nearly all maintenance problems. They remove deposits dirty bills leave on read heads and rollers, and keep money flowing through your bill validators, readers, and currency handling equipment. Also available as pre saturated with a USDA approved cleaning solution that is 100% alcohol free. The solution on these bill validator/currency reader cleaning cards is non-mutagenic, non-carcinogenic, non-toxic, and non-flammable. Same great cleaning power, same great quality guarantee and Alcohol-Free!