Star brite 98932 Ultimate Gel Formula Fiberglass Stain Remover, 32 oz.

Gel formula sticks where applied for maximum cling time and cleaning power.

• Removes yellowing and tough waterline stains
• Completely covers stains to penetrate and dissolve them
• Specifically formulated to remove the toughest stains, including rust, dried fish blood and leaf stains
• Works on all fiberglass and painted surfaces; ideal for vertical surfaces