The one second drain cleaner - Instantly clears most blocked and slow moving drains quickly without the use of acid, lye, or harsh chemicals - Safe for all sewage systems and septic tanks - Works on single sinks, double sinks, and bathtubs - When you use Plumber One can with the adapter kit (1700-1801), you greatly expand the usefulness of the product - With the adapter kit, the product clears blockages from toilets, floor drains, showers, and disposals - 6 applications per can