"...while durable, if you do not clean your fiberglass bathtub regularly, it will not serve you for long. On the bright side, cleaning a fiberglass bathtub is easy."
"Dish soap is a basic but effective product for cleaning a fiberglass bathtub. It is ideal for eliminating grime and degreasing your bathtub."
"Baking soda is an excellent cleaning product that is easy to come by and is perfect for cleaning surfaces like fiberglass."
"Combining these ingredients gives you an all-purpose cleaner to eliminate stubborn stains in your bathtub or shower."
"According to one source, you may even be able to use it to remove yellowing from your fiberglass bathtub."
"Soft drinks can help you remove stains and yellowing from your bathtub. Take any soft drink and pour it into your bathtub. Let the beverage sit for at least 10 minutes to penetrate the stains."