A powerful, ready to use Sulfuric acid drain opener. Quickly dissolves all organic obstruction, grease, hair, sanitary napkins, rags, sludge, soap, paper and coffee grounds in drains of sinks, toilets, cesspools, slop tanks and grease traps. Removes light scale and rust deposits from drains and traps. Will not harm septic tanks or pipes. Use weekly in all drains as preventative maintenance measure.