Hello together, I could find in the forum some posts on flies, rust etc., but no comments on good and tested cleaners. I have the challenge that even after washing the flies were not removed properly, neither on the bumper nor on the disk. A friend spoke of Würth cleaner in May, a foam. Do you have product suggestions for me? The same applies to the rims. The washing line does not get the rims properly clean, I would like something Thank you. Vg