You think you know where this goingmaybemaybe not. Note: annecollins APPROVES of this questionPOLL: Safety glasses ?OR? Safety goggles?
They make anyone with a brain slowdown. In a perfect world where everyone is a good driver, they are not necessary. In this one? Oh yea.
If it is lime scale buildup then CLR is good stuff. Otherwise, maybe a mild solution of sulfuric acid.