I've had no issues using clay on the nose cone. I did find that there was one splat that hasn't come completely clean off the nose cone after today's wash. It's only visible from some angles and with the right lighting, but there's still something there and clay didn't do the trick for that particular splat. Not sure what I'll try next. Everything else came off the hood and front end with my base wash (microfiber mitt) and no special additional cloths or cleaners. I'm sure that having waxed it not long before the drive helped keep the bugs from sticking around for long.