Using these RokBlokz mud flaps is easy. First, gather all the included items: 4 black mud flaps with a red logo, stainless - steel and rust - resistant mounting hardware, and the fitting instructions. Then, refer to the instructions to find the existing OEM mounting locations on your 2022 - 2025 Subaru WRX. You don't need to drill any holes. Simply attach the mud flaps using the provided hardware. As for maintenance, it's quite simple. Regularly wash the mud flaps with mild soap and water to keep them clean and in good condition. Avoid using harsh chemicals as they might damage the flaps or the logo. When driving in extreme conditions, like very hot or cold weather, don't worry as these flaps are designed to handle it. But still, keep an eye on them every now and then to make sure they're securely attached and not showing any signs of wear and tear. If you notice any issues, you can always refer back to the installation instructions or contact the manufacturer for further assistance.