How to unclog a sink with a commercial cleaner
For serious blockages that are caused by hair or grease, you may need to opt for a specialist cleaner like Domestos Sink & Pipe Unblocker. These commercial cleaners will break down dense organic matter in minutes. Follow the instructions at the back of the bottle to unblock your sink.
Remove the u-bend
If there is a major blockage that isn’t responding to chemical solutions, you may need to remove the u-bend. Locate the u-bend pipe, which is usually accessible and below the kitchen sink, and place a large bucket beneath it. Have towels laid around the area as splashing is common.
Unscrew the u-bend extremely slowly and let the water leak out. Once you’ve removed the u-bend entirely, check to see whether there is anything blocking the pipe and use a wire hanger to dislodge it.
Once you are certain that it is clean, tightly screw the u-bend in place, making sure there are no leaks, and test that water drains properly by turning on the kitchen tap. If you are finding that the pipe still leaks, you may need to use to secure the u-bend with waterproof tape.
So next time you notice a bad smell rising up from your plughole, try one of the methods above.