How to empty out the P-trap of your bathroom sink, and other plumbing tips and tricks for handling a job on your own. Local Sports Things To Do Politics Travel Advertise Obituaries eNewspaper Legals.

With an “S” trap drain, the trap is easily siphoned dry with each use and the water seal no longer exists. A properly installed “P” trap will always maintain a water seal.

You read the headline correctly. We’re discussing the T-trap not the P-trap. First, a little Plumbing 101. The P-trap is that P-shaped curl in the drain below the sink (and other plumbing fix… ...

If you've noticed a foul odor coming from your bathroom sink's P-trap, you might wonder what's causing it. These reasons are likely the culprit.

With the food, the bacteria thrived. They formed a biofilm in the P-trap and started moving—2.5 centimeters upward each day. By day seven, they had made it to the drain.