BioGuard Off The Wall is a professional-grade pool wall cleaner designed to make it easy to remove scale, dirt, and stubborn stains from all types of pool and spa surfaces, including vinyl, fiberglass, ceramic, stainless steel, aluminum, and painted walls. If you’ve ever wondered how to clean dirty pool walls efficiently, this cleaner is your solution. Its new gel formula is 10× thicker and 2× faster at penetrating scale deposits than the previous version, helping you tackle even the toughest buildup with minimal effort.