Yes, you can safely leave white vinegar in your sink drain overnight without risking damage to your metal or PVC plumbing pipes. Because vinegar is a mild acetic acid, letting it sit for several hours or overnight allows it extra time to soften stubborn hard water mineral scale, neutralize foul organic odors, and break down light grease films clinging to the interior walls of the P-trap. Verification: Flush the drain thoroughly with a kettle of hot tap water the following morning to wash away the loosened residue.
1 votes
Marked as accepted