Before leaving for vacation, most people remember to lock doors, unplug electronics, and turn off appliances—but one small area is often forgotten: the sinks. Unused drains can develop unpleasant odors as plumbing traps dry out, and they may even attract small insects looking for a way inside. Luckily, travelers have discovered a simple trick that takes less than a minute and costs almost nothing.

After cleaning and drying your sink, place a paper towel over the drain and cover it with an upside-down glass. The paper helps block the opening, while the glass creates an extra barrier against smells, insects, and air coming from the pipes. It may seem unusual, but this simple method can help keep your home fresher while you’re away.

For even better results, clean the drain before covering it. Pour a cup of hot white vinegar into the sink, let it sit for a few hours, then rinse with warm water and dry the area completely. You can also rub a lemon wedge around the drain for a fresh scent.

This easy routine requires no expensive products or special tools. A few moments of preparation before your trip can help prevent unpleasant surprises when you return home. Small habits like protecting your drains may seem insignificant, but they can make a big difference in keeping your house clean, fresh, and comfortable while you’re away.