How to Clean Fiberglass Bathtub Stains
- 1). Create a cleaning mixture by adding a small amount (1/4 cup) of mild detergent or all-purpose household cleaner to a gallon of warm water.
- 2). Use a soft cloth to rub the cleaning solution into the stained area. If stain remains, you will need to create a mildly abrasive cleaning mixture.
- 3). Mix together baking soda and just enough water to create a paste. Using soft cloth, apply the paste liberally to the stained area. Rub the paste into the stained area using a small circular motion. Use a toothbrush to scrub hard to reach cracks and crevices.
- 4). Rinse the area thoroughly using warm water. If the stain remains, create another paste mixture using tri-sodium phosphate (TSP) and water.
- 5). Apply the TSP paste liberally and scrub it with a soft cloth or toothbrush. Rinse thoroughly with warm water.
- 6). Apply a car wax, such as Turtle Wax, to help your fiberglass tub surface resist future stains.
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