The P-trap (the U-shaped pipe under your sink) can dry out
Once the water seal evaporates, sewer gases can rise into your home
This causes rotten-egg smells , musty air , and can even attract drain flies or gnats
🐿️ Fun fact: The P-trap is designed to hold water as a barrier against odors and pests — but without regular water flow, it dries up.
✅ The Solution: The Upturned Glass & Paper Towel Hack
How to Do It:
Place a paper towel over the sink drain
Cover it with a drinking glass, upside down
Leave it in place before you lock the door
That’s it.
Why It Works:
The paper towel absorbs any minor condensation or moisture, preventing mold
The upside-down glass traps humidity and keeps the P-trap moist by reducing evaporation
It also blocks insects from crawling up the drain
And it prevents dust and debris from falling in
🛠️ Think of it as a mini greenhouse for your drain — keeping it damp, sealed, and fresh.
🔍 Benefits of This Simple Trick
✅ Prevents bad odors
Keeps the P-trap sealed against sewer gases
✅ Stops drain flies
Blocks entry points for pests
✅ Reduces mold & mildew
Absorbs excess moisture in the sink
✅ No cost, no tools
Uses items you already have
✅ Works in kitchens & bathrooms
Apply to all sinks before leaving
🧼 Bonus Tips for Pre-Vacation Sink Prep
While you’re at it, maximize protection with these pro moves:
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