--71.51.xxx.xxx

soap is greasy and in fact is made of grease. Have you tried the degreaser TSP? And I do hope you are wearing a mask and goggles. --73.33.xxx.xxx

We use bar keepers friend on fiberglass showers. --166.137.xxx.xx

Replace it already - sounds like you have spent at least $500 worth of effort on it already. --68.105.xxx.xxx

BRAD --68.51.xx.xxx

--99.56.xx.xx

I can use it on walls, floors and even ceilings. Before I sold my last house the three bathroom were so dirty that my realtor said I needed to replace the tiles around the tubs and shower. I remodeled these three bathroom around 5 years ago and wasn't going to let tenants destroy my potential profits. In a 4 to 5 hour period I was able to clean two bathtub wall times and one large shower wall tiles and floor with excellent results. --47.156.xx.xx

You might want to Google using Easy Off Blue oven cleaner to clean showers. --100.6.xx.xxx

cal the gal that does it for a living --24.34.xx.xxx

I would like to believe it can be removed. And that this layer has somehow protected the beautiful shower it was new. Get mad at it! Really mad. I've used fine sandpaper, wet it. Also those stones ladies use in their feet, pimice stones...lightly. Only on areas where the scum is you want to remove. Cleaned one that way, took six hours but it was beautiful! Gotta get mad at it! --66.87.xx.xxx

The first thing I try is Krud Kutter, straight up, sprayed on. It works on so many things. Krud Kutter now comes in different formulas, specialized to what you want to clean. Kaboom is also an excellent shower cleaner. And The Works from the dollar store. Squirt that on and you can see it cut through the minerals as it drips down. I usually clean with a dollar store scrubby. It is rough enough to break into the crud, but not enough to scratch. Be careful not to scratch, even the very fine scratches will make a place for the next build up. --96.236.xx.xx

I have since heard that muratic acid is quick and easy but man it tears up the lungs. --68.60.xxx.xx

Haven't given up yet. Biggest mistake trying to do it before we get water on to it. Plumbing overhaul coming this week. I was taking big jugs of water & pouring cups of it to rinse. Just not enough. It's better but so many layers I guess. Thanks for suggestions. --71.51.xxx.xxx

--98.122.x.xx

I have two mobile homes. Sometimes i find the parts to fix or replace cheaper at the mobile home store. Worth a call, habe yoyr measurements ready. --66.87.xx.xxx

Awesome is awesome for that type of work --24.101.xxx.xxx

I just dealt with this. Keep cleaning- it takes multiple rounds of cleaning to get it looking right. I think we cleaned our rental shower at least 6 times. The tenant lived there for 17 years and never cleaned the shower- so gross. We used vinegar, Crud Cutter, Dawn, Comet and a dull razor blade very carefully- looks good now. Just remember that your shower did not get dirty in just one day and so it will take multiple tactics and efforts to achieve success. Tip - spray the white vinegar leave it overnight to just start to loosen the scum- that’s just a pass at though so keep cleaning. --108.184.xxx.xxx

I cleaned a surround with soap scum so thick if you scraped your fingernail along it it curled off of the surface. I used multiple applications of Scrubbing Bubbles. Straight up rubbing alcohol also works. Another possibility is using a towel and a steamer. The one from Harbor Freight works for me. Bar keepers friend is highly abrasive. Once you use it, the surface will be rough and porous and harder to clean than ever. --73.141.xxx.xxx

try straight shampoo. whatever is cheap. shower grime is mostly body oils...for fun write your name in a drizzle of shampoo and let it sit over night...bet it leaves a tattoo of claen in you name --76.176.xxx.xxx

Robert[CA] can you be more specific on the tool you cited? --76.176.xxx.xxx

Likely an abs tub. You should replace it as they discolor with time, get brittle, crack and leak. Menards sells 54” steel tub for $159. --72.172.xxx.xx

I have two hand spinners WITH Vacuum Ports and one walk along model. I use them to clean tile, counter tops, back splash, showers, tubs, flooring (mexican tile, ceramic tile) and vinyl flooring. Also on outside surfaces. Like stucco, wood siding (remove lead paint with high pressure 1200 psi water and collect the lead chips with my HEPA wet vacuum. --47.156.xx.xx