Check the garbage disposal if you’re in the kitchen. Before plunging a kitchen sink, see if the clog is in the garbage disposal; if it’s not draining on that side, that’s your problem. You can plunge that side first to see if it clears the area, but you may need to unplug the garbage disposal and turn the blades manually to clear the disposal.[1]
To turn the blades manually, make sure the disposal is unplugged, then insert an Allen wrench into the bottom of the disposal. Turn it clockwise to help get the blades moving.
If you have a dishwasher, clamp off the drainage hose right near the disposal. It’s a flexible hose, so the clamp will keep the gross water from going into the dishwasher.

Place the plunger over the drain. Make sure the mouth of the plunger completely covers the hole. This part of the plunger should be making contact with the basin all around the plunger.[2]
In a sink or tub, you can rub the edge of the plunger with petroleum jelly to get a better seal.
You likely want to keep a dedicated plunger for drains and a separate one for toilets. In the toilet, make sure you’re covering the hole in the bottom of the bowl when plunging.
Don’t use a plunger immediately after using a chemical drain cleaner. You may get serious burns if the chemicals splash on your skin.[3]

Fill the area with a few inches of water. If you’re in the bathtub, shower, or sink, turn on the faucet. In the toilet, remove the tank cover at the top and lift up the rubber flapper to release some water into the toilet bowl. The water will help you get a better seal. When you put the plunger over the drain, move the head of the plunger around so that it fills with water. That way, you push water down the drain instead of air.[4]
If you’re working on a kitchen sink, use a gloved hand to hold a cloth over the opposite drain. That will make your plunging more effective.

Work the handle of the plunger up and down with force. This movement will create suction and hopefully move the clog.[5] At this point, don’t pull so hard that you break the seal. You want the seal to stay in place as you plunge the drain/toilet bowl.
If you don’t have a plunger, use your toilet brush instead. Stick the brush into the drain so you can push and pull it like you would with a plunger.[6]

Yank up hard when you hear noises or feel like the pressure is changing. When you think you’ve mostly got the clog moved, yank up on the plunger quickly, pulling it off the drain to hopefully push the clog down further.[7] It’s okay if you’re not sure. You can always yank up and then repeat the process of plunging the drain by reapplying the plunger.
The final yank may help to move the clog down the drain.

Test the drain and repeat as needed. Turn on the hot water to help clear out any remnants. If the drain is still clogged, you can plunge the sink again to see if it works. Try this process 2-3 times before moving on to another tactic.[8]

– wikihow