BioGuard® Banish – 1 Qt.
Say goodbye to stubborn algae with BioGuard® Banish, a powerful, fast-acting algaecide that works on all types of pool algae—including green, mustard, and black. In just 24 hours, Banish goes to work clearing cloudy water and eliminating algae at the source. Best of all, it won’t affect your pool’s pH, and it’s safe to use with chlorine or bromine systems—even during shock treatments.

Perfect for quick cleanups or weekly prevention, Banish is non-foaming, non-staining, and works in all pool types. Get clear, clean, swim-ready water with fewer steps and faster results.