Which statement indicates understanding by a client prescribed gentamycin ointment for a skin infection?

The statement demonstrating understanding is that the client will wash the area with soap and water before applying the cream. Proper application of topical medications like gentamicin ointment requires that the area be cleaned first to remove dirt, debris, and any existing bacteria. This cleaning process allows the medication to adhere better to the skin and ensures that it can penetrate effectively to combat the infection.

Applying ointment to unclean skin could impede the medication's ability to work effectively, as contaminants may block its action or dilute its concentration. Overall, this approach enhances the therapeutic effect and minimizes the risk of additional irritation or infection.