The Cat S42 can be cleaned repeatedly with soaps, sanitisers, chemicals, bleach and alcohol.
It can be cleaned easily and thoroughly, at the same time as you wash your hands. Simply submerge it entirely in hot water, lather the phone itself with a sponge or brush in warm soapy water and then rinse it under the tap.
If your phone is in need of a deeper clean, it has been tested to survive. Without any concerns, you can generously apply and wipe all external surfaces with hand sanitisers, anti-bacterial sprays and alcohol wipes, again ensuring all cables are unplugged and all ports are firmly closed.