• Knock Out is a sulphuric acid based product designed to rapidly clear blockages caused by organic substances.
• It's chemical action breaks down and dissolves grease, soap, tea bags, coffee grounds, cooking fat etc.
• Knock Out is almost twice the density of water and therefore sinks quickly to the blocked area, where its powerful action starts to take immediate effect.

Woodmans Knockout Drain Cleaner 1 ltr