Here is one tutorial https://www.hometalk.com/35758561/clean-shower-oh-yes
Hi Wac: Yup, try these sites:
I use a Quickly Clean glove from Hyde Tools (with a plastic glove underneath) and Spray Nine to scrub the shower... I hope this helps!
Lysol Power Scum cleaner in the blue trigger spray bottle with a Magic Eraser or a scrub brush.
Wet & forget shower for a slower, no scrub solution. You can use 2x a week to accelerate the cleaning process then once a week to keep it clean.
Here's my tip: https://bachelorettepadflip.com/2017/03/01/how-to-get-rid-of-mold-mildew-in-a-shower/
I’ve found that a Mr. Clean eraser works well!