For fully blocked drains with standing water, try Mr Muscle Sink & Plughole Unblocker. Mr Muscle Sink & Plughole Unblocker is a thick gel specially formulated so that it will not disperse but instead head straight for the heart of the blockage. Unlike normal bleach it sinks through standing water until it reaches the blockage and destroys the gunk fast, leaving you with an unblocked pipe that is clean and fresh. Sinks through standing water straight to the blockages. Clears blocked and slow running sinks, plugholes and pipes effectively. Kills germs and deodorizes. Does not damage septic tanks or pipes of any type.

Choose Mr Muscle Sink & Plughole Unblocker for fully blocked sinks. A blockage inside the pipe, preventing water from draining away. Direction for use : Slowly pour entire contents down the plughole. Sinks through standing water straight to the blockage. Allow to work for at least 30 minutes. For tough clogs, leave to work overnight. Flush with hot water from the tap. Always read instructions before use and wear rubber gloves before and during use