How do you clean a white fiberglass shower base?

Hi, Maybe you could use a waterproof caulk to seal these areas so you never have to deal with them again.

Hi Linda, try some full strength household bleach, spray it on and let it sit about 5 minutes, put on gloves and safety glasses, do a scrub on it after the 5 minutes, give it a rinse, then use a scrub brush with some cleaner like Mr Clean, or simple green and scrub the area, rinse well and check to see if staining is gone once it dries. Good luck with this!

Linda,. Their is a special cream to clean fiberglass, you can find it in the supermarket or Home Depot or Lowe's. As faras the crevis, try a stiff toothbrush, with the cream. Aloha!

Good Morning Linda, I use 'magic sponges' - I don't know why they work but they definitely do work. I buy a box of them for under £1 and think they are marvellous. I've used them for loads of cleaning jobs - including on my old car, paintwork, stainless steel sinks, bathroom sink and toilet and plastic bath - they are wonderful. Definitely worth trying - inexpensive and they do work on loads of things. I 'Googled' for information and that's where I found out about these little wonders. Hope they work for you. Seasons Greetings, Marilyn

Easy Off oven cleaner! Spray on liberally, let sit for about 10-15 minutes, scrubs with a brush or green scouring sponge and rinse!!!

If all the above fails, get a green think scrubbie, attach it to a sander, and clean the shower. Good luck