Supplies. I've been liking the dawn mixture (equal parts blue dawn and vinegar) that's all over Pinterest. It does wonders on acrylic surfaces. Also, I devote a separate mop head for this.
The soaker tub. I hate getting inside it to clean it. I'm always worried I'll wipe out when its full of slippery cleaner!
Spray on the cleaner and give it a chance to penetrate any built up soap scum.
Wet the mop
Mop away at those hard to reach places without breaking your back or your skull!
Steal a bit of cleaner thats already on the tub to clean the fixtures and the deck using the clean rag. Can you tell my tub was installed in the early 90's? Its really gotta go!
Give the tub a good rinse.
Shiny and new again in no time and very little effort.
I use the same method to clean my vintage shower ;)