The answer to 'drain maintenance' is regular cleaning and care is essential for keeping drains clear and preventing clogs. This typically involves using a drain snake or plunger to clear blockages, as well as flushing drains with hot water or a vinegar and baking soda solution. It's recommended to perform this maintenance every 6-12 months, or more frequently if you notice slow drainage or other issues.
For more stubborn clogs or ongoing problems, it's best to call a professional plumber. They can use specialized tools and techniques to thoroughly clean and unclog drains, as well as identify and address the root cause of the issue.