Using this Perrin License Plate Delete is easy. First, gather all the included hardware. Then, locate the front license plate holes on your 2018 - 2021 Subaru WRX or STI. Attach the license plate delete using the provided screws and wellnuts. Make sure it's securely fastened. As for maintenance, a simple wipe with a clean cloth every once in a while will keep it looking good. Avoid using abrasive cleaners as they might damage the anodized finish. If you notice any loose parts, just tighten the screws gently. This product comes with a warranty, so if you have any issues, refer to the instructions for details on how to claim it.