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 - THIS REALLY WORKS!!!!!!!!!
Best grout cleaner out there and its for carpet! Resolve carpet foam. Spray it on. Leave for 10 min. Scrub it off with a stiff scrub brush! Wha la!! :)) Tip:as you scrub wipe the dirt that comes up off. If you don't it will just soak back in before you get back to mop it off.