[header] How to clean a fiberglass shower floor [title] Use a nonabrasive cleaner. [step] If you have a fiberglass shower or tub, it is important that you only use nonabrasive cleaners, as abrasive cleaners can scratch the surface. Try using a dish washing liquid, liquid laundry detergent, all-purpose cleaner, or a soft scrub product. 
[substeps] Avoid abrasive cleaners like scouring powder or ammonia. [title] Apply cleaner with a nonabrasive applicator.