how it works, and whether it’s something worth adding to your pre-vacation routine.
Where Did the Upside-Down Glass Trick Come From?
Long before social media and online home improvement forums, families passed household tips from one generation to the next. Many of these ideas were based on practical experience rather than formal instruction.
The upside-down glass method is one of those traditions. It became especially common in older homes where plumbing systems weren’t always airtight and kitchens were more likely to experience odors or unwanted pests entering through drain openings.
