the two items I've used have been vinegar and lime green/CLR. The vinegar works well to clean the glass and the lime green/CLR can take away almost anything that's left over.
I'm sure you could bugg the glass - I'd probably use a low setting since you don't want the glass vibrating too much.
to clean the glass, I keep a generic CWB from target ($9) in the shower. after I'm done - a few passes with the blade and there is no water to etch the glass. I'm sure some waxes would work, but I like to make sure the water is just gone.