Your vacation could end with an unpleasant surprise if you forget to prepare your sinks before leaving home. When a house stays empty for days or weeks, unpleasant odors can develop, and drains may attract unwanted insects. A little preparation before leaving can help prevent these problems and make returning home much more comfortable.

Water inside plumbing traps normally prevents sewer gases from entering your home, but the water can slowly evaporate during long absences, especially in warm conditions. Food particles, grease, and other residue inside drains can also contribute to unpleasant smells and create conditions that attract drain flies. Before leaving, clean your kitchen and bathroom sinks, remove debris around the drains, and run water through each fixture to refill the plumbing traps. Afterward, wipe the basins dry to keep them looking clean.

One simple trick involves placing a paper towel over the drain and setting an upside-down glass on top. This may help create a physical barrier against some insects, but it does not provide an airtight seal or replace a properly functioning plumbing trap. Sink overflow openings can also remain exposed, so covering the main drain may not completely prevent odors or pests.

Taking a few minutes to prepare your sinks before a trip can help reduce the risk of unpleasant smells and unwanted insects while you’re away. If odors or pests continue to appear, investigate the underlying plumbing issue instead of relying only on temporary coverings. A little prevention can make your return home much more pleasant.