Housold 500g Caustic Soda Drain Cleaner Powder- Prevent Clogs and Blockages | Effectively Removes Blockages, Cleaner for Blocked Drain Pipes in Sinks, ...
High Strength Sulphuric Acid Drain Cleaner – Liquid Science
Mr Muscle Drain Unblocker, Sink & Drain Cleaner, Fast Acting Heavy Duty Drain Gel, Dissolves Clogs, Works 3x Better Than Bleach, Safe for All Pipes, Duo Pack (2 x 500ml) : Amazon.co.uk: