Using the ASI 0040 toilet paper dispenser is a breeze. First, find a hard surface like a wall in your restroom and mount the dispenser according to the instructions. Then, open the door, insert two jumbo rolls of toilet paper up to 9 inches in diameter. If your rolls have a 2 - 1/4 - inch inner core, use the included roll adapter. The sliding panel at the bottom makes sure only one roll is accessible at a time. Keep an eye on the viewing slots to know when it's time to refill. For maintenance, simply wipe the dispenser with a soft cloth regularly. Avoid using abrasive cleaners that could damage the satin finish. If the tumbler lock gives you trouble, check if it's properly aligned and lubricate it if needed.