Using this Milwaukee triangle sandpaper is easy. First, make sure your oscillating multi - tool has a triangle sanding pad with hook and loop technology. Then, attach the sandpaper firmly to the pad. When you start sanding, move the tool gently over the wood or painted surface. For best results, keep the tool at a steady speed. As for maintenance, regularly clean the dust extraction holes to ensure proper dust collection. Also, check the hook and loop surface on both the sandpaper and the pad. If it gets dirty or worn out, clean it or replace it as needed. Remember to store the sandpaper in a dry place to keep it in good condition.