Ans: To get your plastic shower white you have to first sprinkle some baking soda on the surface of the plastic shower floor then put an old cloth over it, then pour hot boiled water over the cloth so that it gets wet.  Now take a sprayer bottle. Remove its sprayer top and add two cups of white vinegar and two tablespoons of dishwasher soap and put it into the microwave for two minutes. After two minutes, put the sprayer back in the bottle and spray throughout the surface of your plastic shower floor to get a white and shiny shower floor.