eveloped by experts with years of experience, this handy tool will remove even the most stubborn calluses gently and effectively. The clip-on rasp included with the product is for follow-up treatment and treating smaller areas. Diabetics and sufferer of poor blood circulation to the skin are recommended to contact their doctor before commencing treatment. To clean your corn cutter, remove the blade and rinse off the holder under warm, running water. In order to ensure optimal performance, use only original Credo blades