You’ve checked every box:
✅ Fridge emptied
✅ Lights on timers
✅ Plants watered
✅ Alarm set
But there’s one tiny detail most travelers forget — the sink.
It seems harmless, right? Just a stainless steel bowl where you wash dishes and brush your teeth. But when you’re away for days or weeks, your sink can become a hidden source of odors, moisture, and even pests — all waiting to greet you when you walk back through the door.
Luckily, there’s a simple, genius, and completely free trick used by cleaning experts and savvy homeowners alike:
👉 Place a paper towel over the drain, then cover it with an upside-down glass.
It sounds too easy to work — but this small act can save you from musty smells, sewer gases, and uninvited insect guests.
Why the Sink Becomes a Problem When You’re Away
When your home sits empty, water isn’t flowing through the pipes. That means the P-trap — the U-shaped pipe under your sink that holds water to block sewer gases — can dry out over time.
Once that water seal evaporates:
Sewer gases (including methane and hydrogen sulfide) can rise up through the drain, filling your home with a rotten egg smell.
The damp, dark drain becomes a breeding ground for mold, mildew, and bacteria.
Insects like drain flies, ants, gnats, and even cockroaches can crawl up from the plumbing, attracted by moisture and organic buildup.
Coming home to a musty bathroom or kitchen is the last thing you want after a relaxing vacation.
The Upside-Down Glass Hack: Simple, Smart, and Surprisingly Effective
Here’s how it works:
Cover the drain with a paper towel or small piece of toilet paper.
Place a drinking glass or cup upside-down over it, sealing the opening.
This creates a lightweight, breathable barrier that:
Blocks sewer gases from escaping
Prevents insects from climbing up the pipes
Allows minimal airflow to reduce condensation, without drying out the trap completely
Stays in place without needing a tight seal
Unlike rubber stoppers — which can warp, leak, or pop out — this method is reliable, silent, and won’t damage your sink.
Your Quick Pre-Vacation Sink Routine
Make this part of your departure checklist:
Clean the sink thoroughly — wipe down the basin, faucet, and around the drain.
Pour ½ cup of white vinegar down the drain. Let it sit for 1–2 hours to disinfect and break down buildup.
Flush with hot water to clear residue.
Rub a cut lemon around the drain for a fresh, natural scent and extra cleaning power.
Dry the sink completely — moisture attracts pests.
Cover the drain with a paper towel.
Place an upside-down glass or cup over it.
That’s it. You’re ready to lock up — with one less worry.
Why Not Just Use a Sink Stopper?
Great question.
Traditional stoppers may seem like the obvious choice, but they come with drawbacks:
They can dry out or warp, especially in hot weather.
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