Reboot the system by calling its name. Played between two CAT units or a CAT and a K9 unit. Units take turns as one is the data and the other attempts to parse it. Offer fishy data code to elicit a range of audio output. This takes 20 hours in a 24 hour cycle.
CATs are self cleaning and require little user maintenance.
Do not clean the unit with alcohol or benzine-based solvents. This may lead to a violent explosion. There are no user serviceable parts inside. You may examine the rear of the CAT unit to determine if it has a male or female scuzzy port. CATs with a male port may emit a non-toxic aerosol.