The answer to 'drain cleaning maintenance' is to regularly clean and maintain your drains to prevent clogs and slow drainage. This typically involves using a plunger, drain snake, or chemical drain cleaner to remove buildup and debris from the pipes. It's recommended to do this every 6-12 months, or more frequently if you notice slow draining or signs of a clog.
For more stubborn clogs or if you're unable to clear the drain yourself, it's best to call a professional plumber. They have specialized tools and expertise to safely and effectively clear your drains without causing any damage.