Is it possible to use Simoniz light compound #7 on a fiberglass tub that has limescale?

Question

I have tried Magic Eraser, vinegar, Bar Keeper's Friend, Comet liquid cleanser, Scrubbing Bubbles. I do not like to use anything that has a high chemical odor or something that requires rubber gloves, which I cannot wear due to allergies. I know that the compound stuff takes off oxidation on a car and I was just wondering if anyone else tried this and found it to work? I rent so I do not want to damage the tub until I am 100% sure this will work. I would follow it up with Eagle One Wax As You Dry to keep the buildup from coming back(I know not to use it where your feet come in contact with the tub).

Ok, I must repeat I DO NOT want to use any chemicals like Lime Away, CLR, or any other caustic chemicals. I have allergies and reactions to certain things especially latex gloves. Please read the question fully and serious answers only!

I DO NOT WANT TO USE ANY CAUSTIC CHEMICALS(i.e. oven cleaner, lye based products, any products that require the use of latex gloves, or have heavy fumes)! ALLERGIES RESTRICT WHAT I USE.

Answer 1

Cleaning Fiberglass Surfaces
Instructions
STEP 1: Clean your shower using inexpensive and environmentally-friendly products. Vinegar, baking soda and Borax are all viable alternatives to commercial cleaners. STEP 2: Spray white vinegar (it's actually a very mild acid - acetic acid), on the shower walls and floor, then let it sit for 10 to 15 minutes. STEP 3: Dip your moistened sponge into a dish of baking soda or Borax and scrub the walls and floor. STEP 4: Rinse the walls with clean water and squeegee them dry. STEP 5: Clean difficult areas by soaking a paper towel with vinegar and leaving the towel on the hard to clean area for a half-hour or so. Then clean with your sponge dipped in baking soda. STEP 6: Alternatively, use commercial products. Read the labels on any commercial products to be sure they are designed to work on fiberglass surfaces
http://www.ehow.com/how_2004141_clean-fiberglass-surfaces.html

Answer 2

You will see same effect as using the Comet liquid which is an abrasive plus an oxidizer in it Clorine. So id say you will need something else. Basically, youve tried something like this already.

Limescale is a combination of Calcium and Glyceren, Glyceren which comes from the soap. That forms a glue like substance that contiunues to build up, so treatment with an acid such as Lime Away will have no effect due to the barrier presented by the glyceren.

I suggest you go the other route, Try using a caustic soda or strong grease cleaner on it. Spray it and leave it set for an hour or so. You can safely spray a bit of Oven Cleaner on it which is a foaming agent plus caustic soda and that should soften the scum which will allow it to be removed by an ordinary stiff brush.

Answer 3

Go to Wal Mart and get a bottle of CLR. This is what I use to clean the rust, lime, soap scum etc off my fiberglass tug and shower. I use it in the sink and to get rust out of the toilet bowl and any place you need to remove lime deposites and rust. Like on cement, stucco, siding etc. Put some in a small plastic bowl and hold it up so you can clean your shower head too. Cleans dishwashers and washing machines too.

Answer 4

Spray on some C.L.R. and run.