ARB recommend applying a coat of quality wax to all their bars. I thought, yeah, whatever, when I put all my barwork on. Then a mate told me it really does make a difference. So I went and bought some and took the time to apply it properly. Wow, what a difference. Seriously. And the bugs just wash off with a regular wash and sponge. Mind you it needs to be reapplied every six months or so but I am certainly converted to using wax on the barwork. Can recommend Meguiar's "Carnauba Wax'.
For the black plastic bits, I can recommend Mother's "Naturally Black". Works a treat.
KB