Knock Out New Drains/Toilets and Urinals, 1 Litre

Amazon

Powerful outside drain and toilet unblocked designed to be a safer alternative to sulphuric acid unblockers Rapidly dissolves organic material to free up blockages Boosted caustic liquid formula for easy application at the right strength for wide bore pipes and drains Ideal to speed up slow draining plug holes and as a general maintenance to keep drains open, Weight: 0.002755778275 pounds, Manufacturer: Barrettine

Euroffice

Powerful outside drain and toilet unblocker designed to be a safer alternative to sulphuric acid unblockers. Rapidly dissolves organic material to free up blockages. Industrial strength. Non-acidic formulation. 1L bottle.