When it comes to unblocking a bath drain or a blocked sink Vauxhall, it is not one of the most glamorous projects that you can do. If you are able to do the job alone, then you are going to be able to save the money you would have paid for the plumber. Why pay too much money for a job that can be done by you in only five minutes? The main cause of blockages in the kitchen sink is the food particles and grease that go down the drain. Hair and soap residue are the culprits when it comes to bathroom sinks. The sinks have a tubular trap underneath and it is a curved pipe which is connected to a foul water drain. It has some level of water that can prevent odor from coming up into the plughole. It may be blocked by the food scraps, grime or hair. The first step to clear the blocked sink is to use hot water with enough bleach within the drain and to run the faucets. When this fails to work, then you have to use a plunger and also block the overflow area with a wet towel to avoid the air that may escape. You have to add some water within the bath or the sink and use the plughole with the plunger. When you start to plug, you may find that some materials will unclog, but you have to know that this will not be the solution always. If the plunger did not work, then you have to use bicarbonate soda with malt vinegar. This mixture is going to fizz and you should leave it for some time before you run the faucet again. You can also use caustic soda, but you have to be extra careful since it can harm you if it touches the skin.