How can I clean the floor of my "plastic" shower?

Here's a question and answer page that has several ideas used by other people. Hopefully, you will find something from this discussion that will work:

http://ths.gardenweb.com/discussions/2274776/how-to-clean-a-disgusting-plastic-shower-floor

Good luck!

Mr. Clean Magic Erasers do a good job

Dishwasher powdered soap! Wet the acrylic shower floor, add Cascade and scrub. Kaboom spray is also real good.

Mix 1:1 Warm vinegar and new dawn. Shake well and put in spray bottle. Spray that on the floor and let stand about 20-30 minutes. Use a scrub brush. Rinse well. I have never seen this not work.

I use Comet, a sponge and elbow grease!

Mr. Clean Sponge and some elbow grease with your choice of bought or made cleaner. You can make lemon juice, white vinegar in a bottle and spray the floor down. Then sprinkle baking soda all over. Then after letting it sit for a bit, scrub away!

If you don’t get far enough clean, try filling bottom inch of tub with hot water and OxyClean. That will whiten it