The best way to keep your device clean is to keep it in its case in-between tests. If you need to clean SCRAM Remote Breath, use a mild, non-alcohol based disinfectant cleaner and a soft cloth. Do not submerge the device in water. Breath tubes can be cleaned in a dishwasher or with warm water and dish soap.
WARNING: The use of an alcohol-based cleaner or disinfectant could damage the device and could be viewed by your officer as an attempt to tamper.