Tip: Once a week, toss in a few frozen cubes of white vinegar and turn on your disposal. The vinegar will get in all the moving nooks and crannies that are otherwise hard to get to and the ice will sharpen your blades.
I started doing this and will never stop! My tub & shower are always spotless-so simple. Simple shower and tub cleaner: fill wand half and half. Wet surface and scrub. wow! leave in shower & wash while you are already in there