Students must wash their hands with what before serving clients?

The recommended practice for students before serving clients is to wash their hands with soap and water. This method is highly effective in removing dirt, bacteria, and viruses from the skin. Simply using water doesn't adequately remove pathogens, as it does not provide the necessary friction needed for cleansing. While soap alone is an important component for removing germs, when combined with water, it creates lather which helps lift and wash away contaminants more effectively. Hand sanitizer is a viable alternative in certain situations, but it does not replace the need for washing hands with soap and water when hands are visibly dirty or greasy. Overall, using soap and water is the best practice for ensuring proper hygiene in a close-contact environment.