Inside with a bottle brush outside with a soft cloth and mild detergent.
Clean sink bottle trap.
Remove the contents that are causing your kitchen sink bottle trap to block.
Hair soap residue grease food and oil are all known to clog sink traps and drain pipes.
For more stubborn clogs you may need to remove your sink trap to clean it properly.
It s also not a bad idea to take the trap to another sink and rinse it out this will remove any left over soap scum or.
Remove hair soap residue and other culprits.
That dip down and back up is basically the same waste water travel pattern in use inside the bottle trap except the true p trap does so with a full length of pipe.
Once this is completely clean it s ready to be reconnected to the drain again.
For mild clogs use a plunger or a baking soda solution to clean your sink trap and remove the clog.
Return the bottle trap.
Attach it firmly to the basin again and turn on the tap.
Undo all nuts in the bath tub or wash basin and dismantle the trap into its individual parts.
Screw the trap together again not forgetting any seals.
Use a bottle brush or other cleaning tool to remove any debris found in the trap.
If you look at a sink and its plumbing from the side you may see that it extends straight from the wall and then dips down and curves back up much like the letter p this is called a p trap.