One Shot Instant Drain Cleaner 1L

One Shot Drain Unblocker 1L – Unblocks your drain within 30 minutes Description Drain Cleaner – Instantly unblocks drains in just one shot! One Shot is the original and best drain cleaner available in the UK. This has been sold throughout the UK for over 33 years. Tried, tested and trusted, the This brand of drain cleaner has been used by generations of people to save money and keep their drains flowing.