How to clean a sink trap

Before you start

Confirm that this method matches both the fixture and likely obstruction. Prepare for spills, protect the surrounding surface and keep the work area away from children and pets.

• Bucket or shallow tray
• Gloves and eye protection
• Suitable hand tools
• Replacement washers if specified

What a successful result looks like

Normal flow should return without leakage, gurgling or backup elsewhere. If the result is partial or short-lived, stop repeating the same process and investigate farther along the line.

• Stable water level
• Normal drainage speed
• No leak at disturbed joints
• No symptom in a connected fixture

Step-by-step approach

1. 1

   Stop using the fixture and empty standing water safely

2. 2

   Photograph and isolate the connections

3. 3

   Place a container beneath the trap

4. 4

   Remove, clean and inspect the trap

5. 5

   Reassemble, hand-test and check carefully for leaks