How to clean?

Hello, I have seen a really nice R1200S in a parking lot today, great colors, simply chic. On closer inspection, I got dizzy: in the area around the starter and especially in the area of the lamp and the disc, the machine is incredibly rugged. After a tour with rain and agricultural road cover, the question arises for me: how do you get it clean again. The parked specimen was like from the brochure, flash-blank. My machine already decorates after a short distance at least one or other insect corpses, albeit considerably less than before. Everything on the BMW is also angled and shattered at the front. How by heaven do you get it clean again? Or do you just buy ‘ne new? Toothbrush and cotton swabs? The parked specimen was really flawlessly clean, including high-gloss cooling ribs. In Ernst, my previous RS had a largely smooth covering, sponge over it and clean was. Also the block had only a few dirt nests, no comparison to the machine seen. So, what is useful?