Using the Perrin License Plate Delete is easy. First, gather all the parts from the box, which include the license plate delete, screws, wellnuts, warranty, and instructions. Then, locate the front license plate holes on your 2018 - 2021 Subaru STI or WRX. Clean the area around the holes to ensure a good fit. Decide which side of the plate with the lasered logo you want to display. Next, use the provided screws and wellnuts to attach the plate to the bumper. Make sure it's firmly in place. As for maintenance, just wash it regularly with mild soap and water. Avoid using abrasive cleaners that could damage the anodized black finish. When it's wet, dry it with a soft cloth. If you notice any loose parts, check the screws and tighten them if necessary. Keep the plate stored in a dry place when not in use to prevent rust or damage.