Knockout Drain Toilets & Urinal Unblocker 500ml Caustic Liquid

• Powerful outside drain and toilet unblocker 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