Cassida CleanBill Pro cleaning cards incorporate raised cleaning waffles that allow for a deeper and more thorough cleaning than conventional cleaning cards. The cleaning waffles create a spring-loaded cleaning system to reach into recessed areas of the currency counter to remove dirt and debris more effectively. Available in10-pack carton (10 individually wrapped cards). IMPORTANT: Use CleanBill Pro at least weekly, or more if needed. Frequency is dependent on the count volume and environmental conditions (humidity level, dustiness). For best results, use in conjunction with CleanPro air duster and CleanPro swab. Suitable for all brands of currency counters and automatic counterfeit detectors. An IPA (isopropyl alcohol) free product.