5 Litre Heavy Duty Sink & Drain Unblocker - 1 x 5 Litre
JCB Sink & Drain Unblocker 500ml
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:
Best drain unblocker liquid and tools | Evening Standard