I use the "Scrubbing Bubbles" spray thingie on mine...works GREAT!
The other thing to remember is that if your bathroom doesn't have good ventilation is to leave the shower door slightly ajar so it can air dry, even if you wipe it down...mine got mold/mildew and had to tear out all of the caulk, scrub with bleach, and re-seal it...kind of a PITA!!