MaryKate On & Off Hull & Bottom Cleaner Gel Marine Fiberglass Stain Remover

MaryKate ON&OFF Hull/Bottom Cleaner Gel is a fast-acting fiberglass cleaner designed to remove stubborn waterline stains, rust marks, grease, and scum buildup. Its thick gel formula clings to vertical surfaces for effective cleaning and easy rinse-off results.

Key Features:

• Thick gel formula clings to hull surfaces for better cleaning performance.
• Removes waterline stains, rust stains, grease, and scum buildup quickly.
• Blue-green color helps show where the product has been applied. 
• Safe for fiberglass and gelcoat surfaces when used as directed.