Using this vending machine is a breeze. Just use the push - button to make your selection. It only takes a small amount of force, so you won't have to strain your wrist. To load products, simply access the product tray. There are no weights involved, making the loading process easy. It can hold up to 30 tampons and 20 napkins. Remember to keep the keys for the two tumbler door locks safe as they are keyed like other Bobrick accessories. For maintenance, clean the satin - finish stainless - steel surface regularly with a soft cloth. Avoid using abrasive cleaners that could damage the finish. If you want to change the coin operation mode, it's easy to convert from free to 25¢, 50¢, or token field coins.