I always wipe mine off after each flight and check the controll surfaces. At the end of the flying day I wipe it down with 409 cleaner and wax it with turtle wax. I keep the control surface area's and the horrizontal and vert. stab area clean with "Q" tips and after run oil the engine . Keeps them in great shape and gives me a little piece of mind. Although i dont fly every airplane every trip all 27 of them look great in the hanger. Oh yeah i almost forgot I religeously check the wheel pants screw after the end of the day also.