How can I clean a textured bathtub?

I also have a textured tub, and have had similar difficulty cleaning it easily. Previously my best approach was to use Vim Cream with Bleach and a drill brush, and that works OK but is still pretty laborious.

This past weekend I went in with a Mr. Clean Magic Eraser. It worked phenomenally well for me, though I suspect the exact texture of the bottom of your tub will determine whether the eraser works well or gets prematurely shredded. (My tub's texture can best be described as "pebbled.")

I realized that I was getting the bathtub and shower with textured floor clean, cause you could see an obvious difference while scrubbing. I would proceed to rinse them. And one day it hit me.... The trick to this is to keep things moving....while rinsing with hot water continue to scrub with a brush in all directions.. Clockwise,,,counter clockwise....left....right....this prevents the loosened dirt from going back into the texture and resetting. So just remember....keep the water rinsing and moving while you keep the dirt moving also by scrubbing in all directions until you have worked your way to the drain. ...I hope that my discovery will help to make someone's cleaning ritual easier. And it doesn't take years to discover.

The build-up on a composite tub is often body oils and dirt. In my experience, what worked best was a cleanser like Comet with bleach, Simple Green cleaning solution and a very stiff nylon brush.

Sprinkle the cleanser on the wet tub surface. Add a few tablespoons of the liquid Simple Green. Scrub until you have remove all the dirt trapped in the patterned floor. Rinse, repeat.

Once you have FULLY removed trapped dirt and oils, the surface will be easy to keep clean. A weekly cleaning with a few sprinkles of cleanser and a sponge, will keep the build-up from happening. I think the “scrubbing bubbles” are pretty ineffective unless your using it daily.

Whitening Toothpaste will do the trick quickly and without much work. Can also be used on clothing instead of bleach to get stains out.

I'd say your best bet would be to find a product containing potassium hydroxide (normally used in oven cleaners and fat removers). I'm using a concentrate called "Concentryl" which I dilute und put in a sprayer. You can use it on just about anything except aluminium. Let it work a couple of minutes and then lightly brush and wash off. Should be a doddle, to get the tub clean!

(Only work with rubber gloves as the product is acidic)

An oscillating brush will work a lot better than a rotary brush to get into tiny indentations. I'd suggest an electric toothbrush as an experiment (obviously, use a head you won't use in your mouth again); if that works well, you may be able to find a brush attachment for a "multi-tool" oscillating head (a cordless type is safer, though a corded tool is okay if you have a GFCI -- Ground Fault Circuit Interrupter -- to connect it to mains power).

Apply the Scrubbing Bubbles Shower Foamer, then use something like this to scrub the tub.

You need a limescale remover, but you need to select one that won't harm the surface - something like Limelite (available as a gel, spray or liquid) should do it if its available where you are (see link below), but there are others available. Apply and wait the requisite time, then try rinsing or wiping off some to see if its done the job - if not, leave it for longer. So long as its one that's suitable for plastic or acrylic, it won't cause damage even if you leave it 3 times as long. I know, I've done it...

http://www.lime-lite.co.uk/products.php?id=3