Scholl Concepts Marine Piranha Extreme Multi Purpose Degreaser 

Piranha is an excellent, extremely effective cleaning agent for painted surfaces or gelcoat. It main focus is removing waterline stains, smears, rust filling stains, birds excrement, and other normal stains that can commonly be found around a yacht or boat.

Application:

• Spray Piranha on the surface intended to be cleaned.
• Let solution sit on surface for 1-2 minutes, allowing the Piranha to activate.
• Rinse of thorough with water or pressure washer 

Tips: 

• For stubborn dirt, use a cleaning brush to rub the dirty surface before rinsing.