Results vary depending on the plumbing system, climate, and length of your trip.
Is paper necessary?
Not always.
Some people simply place the glass directly over the drain, while others use paper to create a better seal.
Can I use
a bowl instead?
Certainly.
Any clean container that fully covers the drain opening can serve a similar purpose.
How long can the drain remain covered?
As long as you’re away.
Simply remove the cover when you return and run water through the drain before using the sink.
Final Thoughts
The upside-down glass over the sink drain may seem like an old-fashioned household trick, but it’s based on a simple idea: creating an extra barrier against odors and the occasional unwanted pest while your home sits empty.
