The Simple Sink Trick Travelers Swear By—Why an Upside-Down Glass Can Make a Big Difference

that can loosen or fail to seal properly, this combination stays in place without special tools or equipment. It may look unusual, but many experienced travelers rely on this easy habit before locking the door and heading out—and there’s one more step that makes it even more effective.

Before covering the drain, pour a cup of hot white vinegar into continue reading …