My walk in shower floor has a build of soap scum
I use The Works from the Dollar Store. Need to wear gloves, old clothes and run the fan with the window open.
Lysol Power BathroomCleaner in the blue spray bottle is great for removing soap scum. Scrub with a power scrubber, magic eraser, or scrub daddy.
Wet & Forget Shower for weekly maintenance to prevent having to scrub in the future.
Our DIY bathroom cleaner is made specifically for soap scum :) http://chemistrycachet.com/the-best-homemade-bathroom-cleaner/
Gel Gloss spray is the BEST!!!