Maintaining a well-functioning kitchen drain is essential for any homeowner. However, over time, kitchen drains can become clogged due to everyday use, causing a range of inconveniences and potential damage. Knowing when to call a drain-clearing service can save you from costly repairs and ensure your kitchen remains hygienic and fully operational. Here are some key signs that indicate it’s time to seek professional help. Slow-Draining Sink A slow-draining sink is one of the most common signs of a clogged drain.