Final answer:
The query relates to handwashing, which involves using warm water and liquid soap to wash hands for at least 20 seconds, including all surfaces and under nails, followed by a thorough rinse and proper drying.
Step-by-step explanation:
The question seems to be referring to personal hygiene, particularly handwashing, rather than handling a 'wet cast' which could be interpreted as a medical cast for broken bones. In the context of handwashing, you should use warm water to wet your hands before applying about 5 mL (1 teaspoon) of liquid soap. It's important to create a proper lather and cover all areas of your hands, including the backs of your hands, between your fingers, and under your nails, for at least 20 seconds. Rinse your hands thoroughly, allowing water to flow from the wrists to the fingertips to ensure contaminants are washed away. Finally, dry your hands with a clean towel or hot air blower, and if possible, use the towel to turn off the tap and open doors to prevent recontamination.