Salt & Bicarbonate of Soda
This is a good combination for taking on sink clogs. You want your mixture to be 2 parts bicarbonate of soda to every 1 part of salt. A good measurement is about half a pint glass of bicarbonate of soda. Add half as much salt to that and then put it in the sink.
Pour one cup of fresh baking soda down the drain, followed by one cup of white vinegar. Place a rubber stopper or other sink hole cover over the drain opening. Wait 15 minutes to allow the vinegar and baking soda to unclog your drain, Then take out the drain cover and run hot tap water down the drain to clear the clog.
All you need is a wire coat hanger, which you can unravel until it's straight. Then bend one end of it into a U shape, and push and pull this end in and out of the toilet to break up the blockage. Make sure you wear gloves for this one to protect you from any nasty germs or mess.
The Santeen Sulfuric Acid Drain Opener proved to be the most potent among all the chemical drain cleaners we tested, effectively dissolving 80% of the hair, 80% of the organic matter, 40% of the grease and 76% of the paper products.
Drano's Max Gel Liquid Clog Remover works quickly too, without any elbow grease on your part. Simply pour the formula down a backed-up sink or drain and let it go to work. For minor clogs and slow-flowing drains, the gel works in 15 to 30 minutes.
Heat 2 or 4 liters of water on your stove or in a kettle to just short of boiling. Add about 1/2 cup of salt. Try pouring this down the drain, then wait 15 minutes before seeing if it will clear more easily. If you need a stronger cleaning, pour 1/2 cup of baking soda down the drain, then add 1/2 cup of vinegar.
Salt, Borax, and Vinegar
This potent mix is great for tougher clogs. Combine 1/4 cup of salt, 1/4 cup of Borax, and 1/2 cup of vinegar. Pour the gritty solution down the drain, followed by a pot of boiling water. Allow it to work overnight, if possible, before flushing with more hot water.
And drainage pipes aren't pressurized like your typical water system. When you use boiling water to flush the clogged drain, pressure is added. Along with gravity, this pressure helps remove unwanted goop out of the pipes and unclogs drains.
Use boiling water
If you've dealt with drain blockages before and are an avid DIY-er, you'll know boiling water is the easiest and least expensive solution of all, which makes it the best one to try first. Boiling water may be all your pipes need to loosen a blockage made up of grease, soap residue and food debris.
Vinegar is effective at cutting grease and baking soda causes a reaction with vinegar that bubbles up and helps to remove blockages in the pipe. Pour the baking soda into the drain first, followed by a generous glug of white vinegar. Wait a few minutes until the mixture has stopped fizzing and flush with hot water.
Baking Soda and Vinegar
Make sure you clear any standing water in the sink first, then pour a cup of baking soda down the drain. Follow this with a cup of vinegar, and immediately put the rubber stopper in the drain. The mixture will fizz, and push the clog down. Follow with hot water from the tap to finish flushing.
The fizzing reaction and gas created may help loosen some small blockages. However, it is not typically strong enough to break down larger clogs or remove hard-to-reach debris. As a result of the above facts, if you have a serious drain clog, using baking soda and vinegar is unlikely to be effective.
If your sink doesn't have a garbage disposal, use Drano® Kitchen Granules Clog Remover. It creates heat inside your drain to melt and dislodge greasy clogs.
All you need to do is simply bring a pot of water to a boil, and then slowly pour it down the drain once it has reached a rolling boil. You may have to repeat this a few times to fully clear the drain clog. Boiling water won't hurt your pipes in the bathroom sink, and you can repeat this method as many times as needed.
HG drain unblocker is a safe and extremely powerful liquid for effectively clearing blockages in just 30 minutes. Instructions for Use - Pour 300ml of HG liquid drain unblocker down the affected drain, and leave to work for approximately 30 minutes.
Bicarbonate of soda (or baking powder) and white vinegar
All you need to do is pop a couple of teaspoons of bicarbonate of soda down the plughole and chase it with a cup of white vinegar. Leave it for about five minutes and then try flushing the blockage with the hot kettle water.
Pour one-half cup table salt down the drain, followed by boiling water. Or try a cup of baking soda and a cup of vinegar—let it bubble, wait 15 minutes, then pour boiling water down the drain. You can also try a cup of baking soda and a half-cup of salt; let it sit for several hours, then flush with boiling water.