Sink Stop the Trap From Drying Out?
This is an important distinction.
Simply placing something over the top of the sink or drain doesn’t restore a dried-out P-trap.
If the trap is already empty, covering the drain may reduce airflow but doesn’t put water back into the plumbing.
A better approach is to make sure the trap contains water before leaving.
A Simple Step Before You Leave
If you’re going away for an extended period, run water through each sink for a few seconds before you leave.
This ensures that
