Using the ASI 04684-50 Sanitary Napkin and Tampon Vending Machine is easy. Just insert 50 cents and select the product you need from either the tampon or sanitary napkin compartment. When it comes to maintenance, regularly check the stock levels and refill the tampons and sanitary napkins as needed. Keep the machine clean by wiping down the surfaces with a soft, damp cloth. Avoid using abrasive cleaners as they may damage the No. 4 satin finish. Also, make sure to keep the tumbler locks in good working condition to prevent unauthorized access. If you notice any issues with the machine, such as a jam or a problem with the locking mechanism, contact a professional for repair.