Seal off any over flows. A damp towel or cloth can be used, or an alternative method would be to use a piece of tape (strong adhesive tape is best e.g. duct tape).
Step 4 – Ensure a tight seal
To ensure a tight seal, apply a liberal amount of petroleum jelly to the sealing edge of the cup.
Step 5 – Submerge plunger
The plunger needs to be at least half covered in water to be effective. If there is not enough water in the sink, add some until the cup is covered.
Step 6 – Angle entry
Angle the entry of the plunger into the water; this will eliminate any possible air lock.
Step 7 – Cover drain hole
Stand the plunger vertically, covering the drain hole, to ensure it has a tight seal. A gentle upward pull will test this; if the seal is tight, you will feel the cup stick to the surface.
Step 8 – Press down firmly
Press down on the plunger handle firmly, this will flatten out the cup.
Step 9 – Begin plunging
Begin plunging, pulling up and down firmly, being careful to not break the seal.
Step 10 – Work plunger
Work the plunger up and down a few times, with quick pulls and force, then give the plunger a forceful pull upwards to break the seal and lift up out of the water.
Step 11 – Check blockage
If the blockage is loosened or dislodged, the water will run away down the drain.
In some cases, the blockage may require a bit more work, so the process should then be repeated.