Don Aslett's makes it easy. They have some fabulous products that truly do take most of the work out of cleaning. The have this bathtub cleaner called Showers & Stuff that literally eats all of the gunk off your shower with very, VERY little effort. It stinks to high heaven but the ease factor makes it all worth it.
They also have a fabulous microfiber mop that was worth every penny....Check them out!