Can anyone tell me how to remove dirt from the floor of my shower?

http://www.housecleaningcentral.com/en/cleaning-tips/floors/cleaning-floor-shower.html

Make a paste with a powdered cleanser and water. Cover the dirty area with it. Let it dry, then add water and scrub with a scrub brush. If it does not come clean, take paper towels soaked in bleach and lay them over the dirty area. Sprinkle a couple times to keep the towels wet. That should bleach out the dirt.

Mix equal parts vinegar and Dawn dish soap, spray on, let sit for about an hour, and scrub with Mr clean eraser

Baking soda & water to make a paste, apply and scrub with a plastic brush! Maybe let the baking soda set for a while, then scrub even more. Finally a vinegar & water rinse. May have to do this multiple times. If still not gone, place an old towel on the stained area and pour EITHER bleach or peroxide onto the towel and let soak for 15-20 minutes and it may get rid of the final bit of stain.

If you're heavy into not using chemicals then I don't know but I used a chlorine-based spray cleaner and it worked wonderfully well.

If it is an fiberglass shower Easy Off in the blue can. Spray it on, turn exhaust fan on and close the door. In about an hour go back in and gently scrub and rinse.

I use dollar store purchased powder cleanser ("Comet/Ajax", etc, with bleach). The secret is to wet down the shower first. You must have that to activate a dry cleanser. Use a "Dobie" or similar scrubber to scrub out. Lots of water to make that good scrub paste!

Pumas stone

Try bleach or CLR calcium, lime, and rust remover.

I use the mr clean magic eraser sponge, but the generic version from the dollar tree. This works the best and the fastest. It also works like magic on coffee mug stains, which is a pet peeve of mine so I keep one in my bathroom and one in my kitchen. If I could only have one cleaner it would be that one, no smell and works great!

I’d bleach it