However, if a home will be vacant for a very long time, plumbing maintenance becomes more important, particularly in climates where evaporation or freezing could be concerns.
For an extended absence, follow the recommendations appropriate for your plumbing system and local climate.
Can a Covered Sink Prevent Pests?
This is another reason people sometimes recommend covering drains.
In certain circumstances, keeping drains closed can help limit access through plumbing openings.
However, a sink cover isn’t a reliable pest-control method.
If you’re dealing with recurring insects or rodents coming through plumbing
