Using these OLM window rain guards is easy. First, make sure the surface where you'll attach the guards is clean. Then, use the double - sided 3M adhesive to stick the guards in place. You can do this without any special tools. When there's a storm, simply crack your windows open a bit to let fresh air in. For maintenance, clean the guards with a mild soap and water solution regularly. Avoid using abrasive cleaners as they can damage the smoked - tinted finish. And always check the adhesive periodically to ensure the guards stay firmly attached to your vehicle.