The first thing many people notice after returning from vacation is an unpleasant smell inside the house. While it may seem like a serious plumbing problem, the cause is often much simpler. As the original article explains, **“the problem is often nothing more than evaporated water in the P-trap and a few weeks of stagnant, unprotected pipes.”**

A simple cup of salt can help prevent this. Before leaving, pour about one cup of salt into each important drain. According to the article, **“Salt steps in as a quiet bodyguard: it absorbs lingering moisture, discourages bacterial growth, and gently scrubs away light residue before it can harden into a clog.”** This easy step may also help reduce odors and make drains less inviting to pests.

Adding salt to your pre-trip routine takes only a minute but can save you from returning to a house filled with stale or sour smells. If possible, close the drain stopper after adding the salt to provide extra protection while you’re away.

When you return, simply run hot water through the drains to flush everything out. As the article summarizes, **“No chemicals, no tools, no emergency calls—just a small, consistent habit that protects your home while you’re gone.”** With one inexpensive household ingredient, you can help keep your home smelling fresh even after weeks away.