Using these suction cups is super easy. First, make sure the surface where you want to place the solar panel is clean and smooth. Then, press the suction cups firmly onto the surface. This will create a strong seal and hold the solar panel in place. When you're done using the solar panel, gently pry the edges of the suction cups to release them. As for maintenance, clean the suction cups with a mild soap and water solution from time to time. Avoid using sharp objects on them, as this can damage the suction cups and reduce their sticking power. Store them in a cool, dry place when not in use to keep them in good condition.