The HP USB PS2 Washable Mouse is a USB based mouse that is designed to be taken apart (disassembled), when it becomes soiled, or in the event that something is spilled on it. The mouse can to be immersed for cleaning with the following solvents: soap, washing-up liquid, non-abrasive cleaners, general purpose cleaners, bleach, disinfectant, antibacterial cleaners and surgical spirit. The HP USB PS2 Washable Mouse provides protection against ingress of water and dust.