Using the Deltana 5' Door Guard is a breeze. Just install it on your entry door as per the included instructions. Once it's in place, you can use it to open the door partially for ventilation while keeping your home secure. When using it, make sure the door is properly aligned with the guard to avoid any jamming. As for maintenance, use a soft cloth to wipe it down regularly to keep it looking great. Avoid using abrasive cleaners as they can damage the finish. In case of any scratches or dents, you can contact Deltana's customer service for advice. With proper use and care, this door guard will serve you well for a long time.