I use a product called S100 detail and wax. It takes off bugs, too. I dust the bike off first with one of those California dusters they sold years ago for cars & bikes, maybe they still sell them somewhere. Then I use this stuff. Took out the spiderwebs the dealer had given my tank, too.
Edited to add that I spray the stuff onto a microfiber cloth and wipe down and buff by using different areas of the cloth. This way I'm not getting overspray on areas of the bike I may have already done. The auto parts store in my little town didn't have microfiber cloths, but the dollar store did... go figure.