Good thing I'm used to getting the finger. I am an Inspector after all.. Or is it traveling salesman? Either way, I'm used to it.
Isopropyl works well too, but the idea behind brake cleaner was to blast the crud out without having to tear it down. You could go with alchohol and compressed air but then most home compressors don't have dryers so you may be forcing some moisture into the assembly. Brake cleaner was just over $2 and was very effective. If you use it get the non chlorinated (less toxic) and shoot short bursts. As I stated earlier, this stuff can get your metal parts real cold. If they get cold then condensation will form and the rust problem comes up.