Clippers and clipper blades that contact the skin should be:

Clippers and their blades contact the hair and skin, so they must be cleaned and disinfected between clients according to the manufacturer's directions (which may include removing hair, using a blade cleaner/disinfectant spray, and oiling). Proper maintenance prevents the transfer of pathogens and keeps the tool functioning well. As with other nonporous implements, disinfection between clients is required. This applies the general infection-control standard to a specific common tool, the kind of practical connection the exam tests.