Here are a few things that can happen under those circumstances:
- Unpleasant smells: A dry trap or plumbing fault may allow drain odors into the home.
- Drain flies: Organic buildup inside a drain can provide a breeding site for these insects.
- Debris buildup: Dust and loose particles may collect around an uncovered opening.
- Existing plumbing problems becoming noticeable: A leak, slow drain, or recurring odor may still be present when you return.
Notice that most of these issues aren’t caused simply by leaving the sink uncovered. They’re associated with the
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