Here’s why you should always leave an upturned glass and a piece of paper in the sink before going on vacation Read details in 1st comment👇

Before heading out on vacation, most people remember the big tasks: emptying the fridge, setting light timers, arming the alarm, and watering plants. But there’s one overlooked detail that can cause a nasty surprise when you return — your sink.

While you’re away, your plumbing system goes unused. No water flow means your sink’s P-trap — the U-shaped pipe under the drain that holds water to block sewer gases — can dry out. Without that water seal, foul-smelling gases can seep into your home. Even worse, drains can become a gateway for pests like drain flies, fruit flies, ants, or even cockroaches. And any leftover moisture? That’s a breeding ground for mold and mildew.

Luckily, there’s a simple, no-cost solution that plumbers swear by: place a paper towel or coffee filter over the drain and cover it with an upside-down drinking glass. This hack blocks bugs, slows evaporation, and seals in odors — acting like a mini airlock for your sink.

**Here’s how to do it in 10 seconds:**

1. Clean and lightly dry the sink.
2. Lay a paper towel over the drain.
3. Cover with an upside-down glass.
4. Repeat for every sink in the house.

**Pro tip:** Use a clear glass so house sitters know not to use the sink. This tiny trick can save you from returning to musty smells, sewer stench, or uninvited insect guests — all with zero effort.