DRAIN DEVIL is a fully inhibited, heavier than water, liquid drain treatment containing virgin sulfuric acid to quickly dissolve all organic obstructions such as grease, hair, sanitary napkins, rags, sludge, soap, paper and coffee grounds.  DRAIN DEVIL is designed to prevent and eliminate blockages and slow water flow in drains, sinks, urinals and toilets.  DRAIN DEVIL removes scale and rust deposits from plumbing pipes while dissolving organic matter.  When used according to directions, DRAIN DEVIL will not harm septic tanks.