Understand Your Power of Hydrogen (pH)
For Restrooms stick to the acidic part of the pH scale and stay there
Acid, specifically stainless steel / chrome safe acid such as Barkeepers Friend or Foamy Q & A is powerful at removing mildew and rust. It works way better than bleach which doesn’t work.
The Basic Steps Cleaning Your Tub / Shower
For most bathroom cleaning Foamy Q & A is our preferred choice in both residential and commercial cleaning. Foamy Q & A is a powerful disinfectant and an incredible acid that blows through mildew / limescale / rust / etc.
Foamy Q & A works great on stainless steel and chrome as well. It removes rust buildup and helps restore chrome & stainless steel to it’s old shiny self. Just make sure you follow-up with a stainless steel polish.
Although for cleaning tubs/shower walls/toilets foamy Q & A is great sometimes you will need to follow up (especially tubs) with a couple magic erasers to finish off soap scum & limescale. Of course make sure you rinse everything you clean well which should go without saying.
Another product is barkeepers friend that has Oxalic Acid which is almost as effective as Foamy Q & A. Make sure that you don’t just use any acid as many acids release harmful fumes and can easily damage stainless steel and chrome.